{
"name": "Certification marks and hazardous-area classifications: cross-market equivalences",
"description": "Which product-safety certification mark applies in which market, who administers it and under what law (CE, UL, CSA, CCC, PSE, KC, BSMI, RCM, EAC, NOM, INMETRO and others), and how the two hazardous-area classification systems map onto each other: NEC Class/Division designations against IEC/ATEX Zone designations, gas group cross-references (NEC Group A-D against IEC IIA-IIC), temperature-class mappings, and the protection-concept codes (Ex d, AEx e, intrinsic safety) with the US, Canadian and IEC standards behind each. Answers 'is a CB certificate accepted in the US', 'what is the ATEX equivalent of Class I Division 2', and 'which mark is compulsory in China' \u2014 questions where the honest answer is often that there is no direct equivalent, and saying so is the value.",
"url": "https://referencesource.org/certification-standards-equivalence/",
"licence": "Factual compilation with source citations. Facts about which mark applies where and how classification systems map are taken with short attributed quotes linking back to the published guide or page. No standard text is reproduced.",
"last_verified": "2026-08-11",
"stale_after": "2027-08-11",
"sources": [
"https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"https://www.tuvsud.com/en-us/services/product-certification/iecee-cb-scheme",
"https://www.nist.gov/standardsgov/compliance-faqs-ce-marking",
"https://blog.promise.legal/fcc-certification-ce-marking-connected-devices-hardware-startups/",
"https://ecocomply.ai/blog/what-does-ce-marking-cost-for-your-product",
"https://boss.cenelec.eu/homegrowndeliverables/en/pages/adev/",
"https://casco.iso.org/attestations-of-conformity.html",
"https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"https://knowledge.bsigroup.com/articles/just-how-identical-are-identical-standards",
"https://ulse.org/standards/"
],
"records": [
{
"designation": "A",
"equivalent": "IIC",
"applies_to": "Acetylene",
"id": "a",
"url": "https://referencesource.org/certification-standards-equivalence/a/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "A | IIC | Acetylene | <0.50 mm",
"verified_fields": [
"applies_to",
"designation",
"equivalent"
]
},
{
"designation": "AEx maD",
"equivalent": "Zone 20",
"governing_reference": "ISA 61241-18",
"id": "aex-mad",
"url": "https://referencesource.org/certification-standards-equivalence/aex-mad/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "AEx maD Zone 20 ISA 61241-18",
"verified_fields": [
"designation",
"equivalent",
"governing_reference"
]
},
{
"designation": "S Mark",
"market_or_system": "Argentina",
"administered_by": "IRAM",
"mandatory_status": "mandatory in Argentina",
"id": "argentina-s-mark",
"url": "https://referencesource.org/certification-standards-equivalence/argentina-s-mark/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "Product certification to IEC-based standards is mandatory in Argentina under the auspices of its standards body IRAM with conformance indicated by the S Mark.",
"verified_fields": [
"administered_by",
"designation",
"mandatory_status",
"market_or_system"
]
},
{
"designation": "II 1D",
"market_or_system": "ATEX",
"equivalent": "Da",
"applies_to": "Zone 20, 21 & 22",
"id": "atex-ii-1d",
"url": "https://referencesource.org/certification-standards-equivalence/atex-ii-1d/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "fr, d, p, h Equipment Groups Zone 0 DUST Zones Equipment Group De\ufb01ni on Suitable for Zone 20, 21 & 22 GAS Zones Group I Electrical equipment intended for use ATEX Group & Category: II 1D in mines suscep ble to \ufb01re damp IECEx Equipment Protec on Level: Da Electrical equipment intended for use in Types of protec on (electrical):",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"market_or_system"
]
},
{
"designation": "II 1G",
"market_or_system": "ATEX",
"equivalent": "Ga",
"applies_to": "Zone 0, 1 & 2",
"id": "atex-ii-1g",
"url": "https://referencesource.org/certification-standards-equivalence/atex-ii-1g/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Zone 0, 1 & 2 Ace c Acid, Acetone, Ammonia, Butane, Cyclohexane, ATEX Group & Category: II 1G Propane, Gasoline (petrol), IECEx Equipment Protec on Level: Ga IIA Methane (natural gas, non-mining), Toluene, Xylene.",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"market_or_system"
]
},
{
"designation": "II 2D",
"market_or_system": "ATEX",
"equivalent": "Db",
"applies_to": "Zone 21 & 22",
"id": "atex-ii-2d",
"url": "https://referencesource.org/certification-standards-equivalence/atex-ii-2d/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Suitable for Zone 21 & 22 ATEX Group & Category: II 2D Temperature Class (T Class) IECEx Equipment Protec on Level: Db",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"market_or_system"
]
},
{
"designation": "II 2G",
"market_or_system": "ATEX",
"equivalent": "Gb",
"applies_to": "Zone 1 & 2",
"id": "atex-ii-2g",
"url": "https://referencesource.org/certification-standards-equivalence/atex-ii-2g/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "h Methyl ethyl ketone (MEK), Propane-1-ol (n-propyl alcohol) Suitable for Zone 1 & 2 IIC Group IIA and IIB gases plus, Acetylene, Hydrogen ATEX Group & Category: II 2G IECEx Equipment Protec on Level: Gb Types of protec on (electrical):",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"market_or_system"
]
},
{
"designation": "II 3D",
"market_or_system": "ATEX",
"equivalent": "Dc",
"applies_to": "Zone 22 only",
"id": "atex-ii-3d",
"url": "https://referencesource.org/certification-standards-equivalence/atex-ii-3d/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "d, h Ammonia (630\u00b0C), Hydrogen (560\u00b0C), Suitable for Zone 22 only T1: 450\u00b0C Methane (537\u00b0C), Propane (470\u00b0C) ATEX Group & Category: II 3D Zone 22 T2: 300\u00b0C Ethylene (425\u00b0C), Butane (372\u00b0C), Acetylene (305\u00b0C) IECEx Equipment Protec on Level: Dc Types of protec on (electrical):",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"market_or_system"
]
},
{
"designation": "II 3G",
"market_or_system": "ATEX",
"equivalent": "Gc",
"applies_to": "Zone 2 only",
"id": "atex-ii-3g",
"url": "https://referencesource.org/certification-standards-equivalence/atex-ii-3g/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "d, p, h Dust Groups that make up the dust Suitable for Zone 2 only IIIA Combus ble Fibres and Flyings ATEX Group & Category: II 3G IIIB Group IIIA dusts plus, Non-Conduc ve Dusts IECEx Equipment Protec on Level: Gc Zone 1 IIIC Group IIIA and IIIB dusts plus, Conduc ve Dusts Types of protec on (electrical):",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"market_or_system"
]
},
{
"designation": "RCM",
"market_or_system": "Australia",
"meaning": "consolidates the previously separate C-Tick, A-Tick and RCM marks, effective from March 2013",
"administered_by": "Standards Australia",
"id": "australia-rcm",
"url": "https://referencesource.org/certification-standards-equivalence/australia-rcm/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "RCM Tick Mark - Australia Australia has a national standards body, Standards Australia, covering many different industry sectors including Electrotechnology and Energy, which embraces electrical/electronic equipment and appliances with relevant standards for safety. Australia\u2019s Regulatory Compliance Mark (RCM) now consolidates the previously separate C-Tick, A-Tick and RCM marks, effective from March 2013.",
"verified_fields": [
"administered_by",
"designation",
"market_or_system",
"meaning"
]
},
{
"designation": "B",
"equivalent": "IIC (partially IIB+H\u2082)",
"applies_to": "Hydrogen, butadiene",
"id": "b",
"url": "https://referencesource.org/certification-standards-equivalence/b/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "B | IIC (partially IIB+H\u2082) | Hydrogen, butadiene | <0.50 mm",
"verified_fields": [
"applies_to",
"designation",
"equivalent"
]
},
{
"designation": "INMETRO Mark",
"market_or_system": "Brazil",
"applies_to": "medical electrical equipment, ballasts and equipment used in hazardous locations",
"mandatory_status": "mandatory in Brazil",
"id": "brazil-inmetro-mark",
"url": "https://referencesource.org/certification-standards-equivalence/brazil-inmetro-mark/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "Certification of certain product groups, such as medical electrical equipment, ballasts and equipment used in hazardous locations, is mandatory in Brazil with accreditation indicated by the INMETRO Mark.",
"verified_fields": [
"applies_to",
"designation",
"mandatory_status",
"market_or_system"
]
},
{
"designation": "C",
"equivalent": "IIB",
"applies_to": "Ethylene, ethyl ether",
"id": "c",
"url": "https://referencesource.org/certification-standards-equivalence/c/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "C | IIB | Ethylene, ethyl ether | 0.50\u20130.90 mm",
"verified_fields": [
"applies_to",
"designation",
"equivalent"
]
},
{
"designation": "(DIP) A21",
"market_or_system": "CA",
"equivalent": "Division 1",
"applies_to": "Class II",
"governing_reference": "CSA E61241-1-1",
"id": "ca-dip-a21",
"url": "https://referencesource.org/certification-standards-equivalence/ca-dip-a21/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(DIP) A21 CA Class II Division 1 CSA E61241-1-1",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "Ex",
"market_or_system": "CA",
"equivalent": "Division 1 & 2",
"applies_to": "Class I",
"governing_reference": "CSA 60079-0",
"id": "ca-ex",
"url": "https://referencesource.org/certification-standards-equivalence/ca-ex/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Ex CA Class I Division 1 & 2 CSA 60079-0",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "Ex d",
"market_or_system": "CA",
"equivalent": "Zone 1",
"applies_to": "Class I",
"governing_reference": "CSA 60079-1",
"id": "ca-ex-d",
"url": "https://referencesource.org/certification-standards-equivalence/ca-ex-d/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Ex d CA Class I Zone 1 CSA 60079-1",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "Ex e",
"market_or_system": "CA",
"equivalent": "Zone 1",
"applies_to": "Class I",
"governing_reference": "CSA E60079-7",
"id": "ca-ex-e",
"url": "https://referencesource.org/certification-standards-equivalence/ca-ex-e/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Ex e CA Class I Zone 1 CSA E60079-7",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "EX ia",
"market_or_system": "CA",
"equivalent": "Zone 0",
"applies_to": "Class I",
"governing_reference": "CSA E60079-11",
"id": "ca-ex-ia",
"url": "https://referencesource.org/certification-standards-equivalence/ca-ex-ia/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "EX ia CA Class I Zone 0 CSA E60079-11",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "Ex ib",
"market_or_system": "CA",
"equivalent": "Zone 1",
"applies_to": "Class I",
"governing_reference": "CSA E60079-11",
"id": "ca-ex-ib",
"url": "https://referencesource.org/certification-standards-equivalence/ca-ex-ib/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Ex ib CA Class I Zone 1 CSA E60079-11",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "Ex m",
"market_or_system": "CA",
"equivalent": "Zone 1",
"applies_to": "Class I",
"governing_reference": "CSA E60079-18",
"id": "ca-ex-m",
"url": "https://referencesource.org/certification-standards-equivalence/ca-ex-m/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Encapsulated Ex m CA Class I Zone 1 CSA E60079-18",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "EX nA",
"market_or_system": "CA",
"equivalent": "Zone 2",
"applies_to": "Class I",
"governing_reference": "CSA E60079-15",
"id": "ca-ex-na",
"url": "https://referencesource.org/certification-standards-equivalence/ca-ex-na/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "EX nA CA Class I Zone 2 CSA E60079-15",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "Ex nC",
"market_or_system": "CA",
"equivalent": "Zone 2",
"applies_to": "Class I",
"governing_reference": "CSA E60079-15",
"id": "ca-ex-nc",
"url": "https://referencesource.org/certification-standards-equivalence/ca-ex-nc/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Ex nC CA Class I Zone 2 CSA E60079-15",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "Ex nL",
"market_or_system": "CA",
"equivalent": "Zone 2",
"applies_to": "Class I",
"governing_reference": "CSA E60079-15",
"id": "ca-ex-nl",
"url": "https://referencesource.org/certification-standards-equivalence/ca-ex-nl/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Ex nL CA Class I Zone 2 CSA E60079-15",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "Ex nR",
"market_or_system": "CA",
"equivalent": "Zone 2",
"applies_to": "Class I",
"governing_reference": "CSA E60079-15",
"id": "ca-ex-nr",
"url": "https://referencesource.org/certification-standards-equivalence/ca-ex-nr/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Breathing Ex nR CA Class I Zone 2 CSA E60079-15",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "EX o",
"market_or_system": "CA",
"equivalent": "Zone 1",
"applies_to": "Class I",
"governing_reference": "CSA E60079-6",
"id": "ca-ex-o",
"url": "https://referencesource.org/certification-standards-equivalence/ca-ex-o/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "EX o CA Class I Zone 1 CSA E60079-6",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "Ex px",
"market_or_system": "CA",
"equivalent": "Zone 1",
"applies_to": "Class I",
"governing_reference": "CSA E60079-2",
"id": "ca-ex-px",
"url": "https://referencesource.org/certification-standards-equivalence/ca-ex-px/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Ex px CA Class I Zone 1 CSA E60079-2",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "Ex py",
"market_or_system": "CA",
"equivalent": "Zone 1",
"applies_to": "Class I",
"governing_reference": "CSA E60079-2",
"id": "ca-ex-py",
"url": "https://referencesource.org/certification-standards-equivalence/ca-ex-py/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Ex py CA Class I Zone 1 CSA E60079-2",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "Ex pz",
"market_or_system": "CA",
"equivalent": "Zone 2",
"applies_to": "Class I",
"governing_reference": "CSA E60079-2",
"id": "ca-ex-pz",
"url": "https://referencesource.org/certification-standards-equivalence/ca-ex-pz/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Ex pz CA Class I Zone 2 CSA E60079-2",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "Ex q",
"market_or_system": "CA",
"equivalent": "Zone 1",
"applies_to": "Class I",
"governing_reference": "CSA E60079-5",
"id": "ca-ex-q",
"url": "https://referencesource.org/certification-standards-equivalence/ca-ex-q/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Ex q CA Class I Zone 1 CSA E60079-5",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "(IS)",
"market_or_system": "CA",
"equivalent": "Division 1",
"applies_to": "Class I",
"governing_reference": "C22.2 No. 157",
"id": "ca-is",
"url": "https://referencesource.org/certification-standards-equivalence/ca-is/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(IS) CA Class I Division 1 C22.2 No. 157",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
],
"disagreements": [
{
"field": "applies_to",
"versions": [
{
"value": "Class I",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(IS) CA Class I Division 1 C22.2 No. 157",
"as_of": "2026-08-11"
},
{
"value": "Class II",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(IS) CA Class II Division 1 CSA C22.2 No. 157",
"as_of": "2026-08-11"
},
{
"value": "Class III",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(IS) CA Class III Division 1 CSA C22.2 No. 157",
"as_of": "2026-08-11"
}
]
},
{
"field": "governing_reference",
"versions": [
{
"value": "C22.2 No. 157",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(IS) CA Class I Division 1 C22.2 No. 157",
"as_of": "2026-08-11"
},
{
"value": "CSA C22.2 No. 157",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(IS) CA Class II Division 1 CSA C22.2 No. 157",
"as_of": "2026-08-11"
},
{
"value": "CSA C22.2 No. 157",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(IS) CA Class III Division 1 CSA C22.2 No. 157",
"as_of": "2026-08-11"
}
]
}
]
},
{
"designation": "(NI)",
"market_or_system": "CA",
"equivalent": "Division 2",
"applies_to": "Class I",
"governing_reference": "C22.2 No. 213",
"id": "ca-ni",
"url": "https://referencesource.org/certification-standards-equivalence/ca-ni/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(NI) CA Class I Division 2 C22.2 No. 213",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "(PX)",
"market_or_system": "CA",
"equivalent": "Division 1",
"applies_to": "Class II",
"governing_reference": "NFPA 496",
"id": "ca-px",
"url": "https://referencesource.org/certification-standards-equivalence/ca-px/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(PX) CA Class II Division 1 NFPA 496",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "(PY)",
"market_or_system": "CA",
"equivalent": "Division 1",
"applies_to": "Class II",
"governing_reference": "NFPA 496",
"id": "ca-py",
"url": "https://referencesource.org/certification-standards-equivalence/ca-py/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(PY) CA Class II Division 1 NFPA 496",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "(PZ)",
"market_or_system": "CA",
"equivalent": "Division 2",
"applies_to": "Class II",
"governing_reference": "NFPA 496",
"id": "ca-pz",
"url": "https://referencesource.org/certification-standards-equivalence/ca-pz/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(PZ) CA Class II Division 2 NFPA 496",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "Type Y",
"market_or_system": "CA",
"equivalent": "Division 1",
"applies_to": "Class I",
"governing_reference": "NFPA 496",
"id": "ca-type-y",
"url": "https://referencesource.org/certification-standards-equivalence/ca-type-y/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Type Y CA Class I Division 1 NFPA 496",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "Type Z",
"market_or_system": "CA",
"equivalent": "Division 2",
"meaning": "Pressurized",
"applies_to": "Class I",
"governing_reference": "NFPA 496",
"id": "ca-type-z",
"url": "https://referencesource.org/certification-standards-equivalence/ca-type-z/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Pressurized Type Z CA Class I Division 2 NFPA 496",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system",
"meaning"
]
},
{
"designation": "(XP)",
"market_or_system": "CA",
"equivalent": "Division 1",
"applies_to": "Class I",
"governing_reference": "C22.2 No. 30",
"id": "ca-xp",
"url": "https://referencesource.org/certification-standards-equivalence/ca-xp/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(XP) CA Class I Division 1 C22.2 No. 30",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "CAN/CSA-C22.2 No. 60335-1",
"market_or_system": "Canada",
"equivalent": "IEC 60335-1",
"id": "canada-can-csa-c22-2-no-60335-1",
"url": "https://referencesource.org/certification-standards-equivalence/canada-can-csa-c22-2-no-60335-1/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "In North America, IEC 60335-1 has been used as the basis for a tri-national standard between the United States (UL 60335-1), Canada (CAN/CSA-C22.2 No. 60335-1), and Mexico (NMX-J-521/1-ANCE).",
"verified_fields": [
"designation",
"equivalent",
"market_or_system"
]
},
{
"designation": "CSA Mark",
"market_or_system": "Canada",
"meaning": "identify products acceptable in either Canada (C suffix letter) and/or the USA (US suffix)",
"administered_by": "Canadian Standards Association",
"id": "canada-csa-mark",
"url": "https://referencesource.org/certification-standards-equivalence/canada-csa-mark/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "CSA Mark - Canada The Canadian Standards Association operates the CSA marking scheme alongside UL certification to identify products acceptable in either Canada (C suffix letter) and/or the USA (US suffix).",
"verified_fields": [
"administered_by",
"designation",
"market_or_system",
"meaning"
]
},
{
"designation": "CB Scheme",
"meaning": "the world\u2019s first international system for the mutual acceptance of product safety test reports and certificates for electrical and electronic equipment, devices, and components",
"administered_by": "IECEE",
"id": "cb-scheme-2",
"url": "https://referencesource.org/certification-standards-equivalence/cb-scheme-2/",
"source": "https://www.tuvsud.com/en-us/services/product-certification/iecee-cb-scheme",
"source_quote": "IECEE CB Scheme Testing & Certification |",
"verified_fields": [
"administered_by",
"designation"
]
},
{
"designation": "CE Marking",
"meaning": "a manufacturer\u2019s declaration that a product meets the applicable health, safety, and environmental requirements outlined in the appropriate European product legislation and has undergone the relevant conformity assessment procedure",
"governing_reference": "Decision 768/2008",
"id": "ce-marking",
"url": "https://referencesource.org/certification-standards-equivalence/ce-marking/",
"source": "https://www.nist.gov/standardsgov/compliance-faqs-ce-marking",
"source_quote": "Decision 768/2008 \u2013 a common framework for the marketing of products , which lays down rules for CE marking. CE Marking on a product is a manufacturer\u2019s declaration that a product meets the applicable health, safety, and environmental requirements outlined in the appropriate European product legislation and has undergone the relevant conformity assessment procedure.",
"verified_fields": [
"designation",
"governing_reference",
"meaning"
]
},
{
"designation": "Certification Body (CB) scheme",
"meaning": "allows manufacturers who have been issued a CB test certificate by one National Certification Body (NCB) to obtain certification marks from other participating NCBs",
"id": "certification-body-cb-scheme",
"url": "https://referencesource.org/certification-standards-equivalence/certification-body-cb-scheme/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "To ease the issue of regional differences, the Certification Body (CB) scheme allows manufacturers who have been issued a CB test certificate by one National Certification Body (NCB) to obtain certification marks from other participating NCBs.",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "CCC Mark",
"market_or_system": "China",
"meaning": "indicates compliance with Chinese laws and regulations",
"mandatory_status": "compulsory for any product used for commercial purposes in China",
"id": "china-ccc-mark",
"url": "https://referencesource.org/certification-standards-equivalence/china-ccc-mark/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "CCC Mark - China The CCC (China Compulsory Certificate) Mark indicates compliance with Chinese laws and regulations and, as its names implies, is compulsory for any product used for commercial purposes in China.",
"verified_fields": [
"designation",
"mandatory_status",
"market_or_system",
"meaning"
]
},
{
"designation": "Class II",
"equivalent": "Zone 20/21/22",
"meaning": "NEC separates dust into Class II (Groups E, F, G); IEC integrates dust into the same zone framework (Zone 20/21/22) with dust groups IIIA, IIIB, IIIC",
"id": "class-ii",
"url": "https://referencesource.org/certification-standards-equivalence/class-ii/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "Dust handling: NEC separates dust into Class II (Groups E, F, G); IEC integrates dust into the same zone framework (Zone 20/21/22) with dust groups IIIA, IIIB, IIIC.",
"verified_fields": [
"designation",
"equivalent",
"meaning"
]
},
{
"designation": "Class III",
"meaning": "NEC Class III (fibers/flyings) has no IEC equivalent",
"id": "class-iii",
"url": "https://referencesource.org/certification-standards-equivalence/class-iii/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "Fiber hazards: NEC Class III (fibers/flyings) has no IEC equivalent. IEC considers fibers within the dust framework.",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "D",
"equivalent": "IIA",
"applies_to": "Methane, propane, gasoline",
"id": "d",
"url": "https://referencesource.org/certification-standards-equivalence/d/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "D | IIA | Methane, propane, gasoline | >0.90 mm",
"verified_fields": [
"applies_to",
"designation",
"equivalent"
]
},
{
"designation": "(DIP) A22",
"equivalent": "Division 2",
"governing_reference": "CSA E61241-1-1",
"id": "dip-a22",
"url": "https://referencesource.org/certification-standards-equivalence/dip-a22/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(DIP) A22 Division 2 CSA E61241-1-1",
"verified_fields": [
"designation",
"equivalent",
"governing_reference"
]
},
{
"designation": "Division 1",
"equivalent": "Zone 1 (+ Zone 0)",
"meaning": "Explosive atmosphere likely during normal operation (10\u20131000 hrs/yr)",
"id": "division-1",
"url": "https://referencesource.org/certification-standards-equivalence/division-1/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "Division 1 | Zone 1 (+ Zone 0) | Explosive atmosphere likely during normal operation (10\u20131000 hrs/yr)",
"verified_fields": [
"designation",
"equivalent",
"meaning"
],
"disagreements": [
{
"field": "equivalent",
"versions": [
{
"value": "Zone 1 (+ Zone 0)",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "Division 1 | Zone 1 (+ Zone 0) | Explosive atmosphere likely during normal operation (10\u20131000 hrs/yr)",
"as_of": "2026-08-11"
},
{
"value": "Category 2",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "Map existing equipment to ATEX categories (Division 1 equipment generally satisfies Category 2; Division 2 satisfies Category 3)",
"as_of": "2026-08-11"
}
]
}
]
},
{
"designation": "Division 2",
"equivalent": "Zone 2",
"meaning": "Explosive atmosphere not likely; only abnormal conditions (<10 hrs/yr)",
"id": "division-2",
"url": "https://referencesource.org/certification-standards-equivalence/division-2/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "Division 2 | Zone 2 | Explosive atmosphere not likely; only abnormal conditions (<10 hrs/yr)",
"verified_fields": [
"designation",
"equivalent",
"meaning"
],
"disagreements": [
{
"field": "equivalent",
"versions": [
{
"value": "Zone 2",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "Division 2 | Zone 2 | Explosive atmosphere not likely; only abnormal conditions (<10 hrs/yr)",
"as_of": "2026-08-11"
},
{
"value": "Category 3",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "Map existing equipment to ATEX categories (Division 1 equipment generally satisfies Category 2; Division 2 satisfies Category 3)",
"as_of": "2026-08-11"
}
]
}
]
},
{
"designation": "Dust-ignition-proof",
"equivalent": "Ex t (Dust protection by enclosure)",
"meaning": "Prevent dust ingress and limit surface temperature",
"governing_reference": "IEC 60079-31",
"id": "dust-ignition-proof",
"url": "https://referencesource.org/certification-standards-equivalence/dust-ignition-proof/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "Dust-ignition-proof | Ex t (Dust protection by enclosure) | IEC 60079-31 | Prevent dust ingress and limit surface temperature",
"verified_fields": [
"designation",
"equivalent",
"governing_reference",
"meaning"
]
},
{
"designation": "CE marking",
"market_or_system": "EU",
"mandatory_status": "compulsory for most products covered by the New Approach Directives",
"id": "eu-ce-marking",
"url": "https://referencesource.org/certification-standards-equivalence/eu-ce-marking/",
"source": "https://www.nist.gov/standardsgov/compliance-faqs-ce-marking",
"source_quote": "Do all products sold in EU require CE marking? No. CE marking is compulsory for most products covered by the New Approach Directives. Products not covered under a New Approach Directive do not require CE marking. It is illegal to place a CE mark on a product that is not covered by a directive.",
"verified_fields": [
"designation",
"mandatory_status",
"market_or_system"
],
"also_reported": [
{
"field": "meaning",
"value": "CE marking is not a third-party approval. It is a manufacturer's self-declaration of conformity with applicable EU law",
"source": "https://blog.promise.legal/fcc-certification-ce-marking-connected-devices-hardware-startups/",
"source_quote": "CE marking is not a third-party approval. It is a manufacturer's self-declaration of conformity with applicable EU law",
"as_of": "2026-08-11"
}
],
"disagreements": []
},
{
"designation": "EMC Directive",
"market_or_system": "EU",
"applies_to": "Wired-only industrial sensors with no radio transmitter",
"governing_reference": "2014/30/EU",
"id": "eu-emc-directive",
"url": "https://referencesource.org/certification-standards-equivalence/eu-emc-directive/",
"source": "https://blog.promise.legal/fcc-certification-ce-marking-connected-devices-hardware-startups/",
"source_quote": "Wired-only industrial sensors with no radio transmitter fall under the EMC Directive (2014/30/EU) instead of RED",
"verified_fields": [
"applies_to",
"designation",
"governing_reference",
"market_or_system"
],
"also_reported": [
{
"field": "meaning",
"value": "Covers electromagnetic compatibility\u2014making sure your product doesn't interfere with other electronics",
"source": "https://ecocomply.ai/blog/what-does-ce-marking-cost-for-your-product",
"source_quote": "EMC Directive (2014/30/EU): Covers electromagnetic compatibility\u2014making sure your product doesn't interfere with other electronics",
"as_of": "2026-08-11"
}
],
"disagreements": []
},
{
"designation": "EN 300 328",
"market_or_system": "EU",
"meaning": "the primary standard for Article 3.2 radio spectrum compliance for 2.4 GHz Wi-Fi and Bluetooth devices",
"applies_to": "2.4 GHz Wi-Fi and Bluetooth devices",
"id": "eu-en-300-328",
"url": "https://referencesource.org/certification-standards-equivalence/eu-en-300-328/",
"source": "https://blog.promise.legal/fcc-certification-ce-marking-connected-devices-hardware-startups/",
"source_quote": "EN 300 328 \u2014 the primary standard for Article 3.2 radio spectrum compliance for 2.4 GHz Wi-Fi and Bluetooth devices",
"verified_fields": [
"applies_to",
"designation",
"meaning"
]
},
{
"designation": "EN 62368-1",
"market_or_system": "EU",
"equivalent": "EN 60950-1",
"meaning": "covers Article 3.1(a) audio/video and IT equipment safety",
"id": "eu-en-62368-1",
"url": "https://referencesource.org/certification-standards-equivalence/eu-en-62368-1/",
"source": "https://blog.promise.legal/fcc-certification-ce-marking-connected-devices-hardware-startups/",
"source_quote": "EN 62368-1 (replacing the older EN 60950-1) \u2014 covers Article 3.1(a) audio/video and IT equipment safety",
"verified_fields": [
"designation",
"equivalent",
"meaning"
]
},
{
"designation": "Low Voltage Directive",
"market_or_system": "EU",
"applies_to": "mains-powered above 50V AC or 75V DC",
"governing_reference": "2014/35/EU",
"id": "eu-low-voltage-directive",
"url": "https://referencesource.org/certification-standards-equivalence/eu-low-voltage-directive/",
"source": "https://blog.promise.legal/fcc-certification-ce-marking-connected-devices-hardware-startups/",
"source_quote": "If your device is mains-powered above 50V AC or 75V DC, the Low Voltage Directive (2014/35/EU) also applies",
"verified_fields": [
"applies_to",
"designation",
"governing_reference",
"market_or_system"
]
},
{
"designation": "LVD",
"market_or_system": "EU",
"meaning": "Safety requirements for electrical equipment operating between 50\u20131000V AC",
"applies_to": "electrical equipment operating between 50\u20131000V AC",
"governing_reference": "2014/35/EU",
"id": "eu-lvd",
"url": "https://referencesource.org/certification-standards-equivalence/eu-lvd/",
"source": "https://ecocomply.ai/blog/what-does-ce-marking-cost-for-your-product",
"source_quote": "LVD (2014/35/EU): Safety requirements for electrical equipment operating between 50\u20131000V AC",
"verified_fields": [
"applies_to",
"designation",
"governing_reference",
"market_or_system",
"meaning"
]
},
{
"designation": "Machinery Directive",
"market_or_system": "EU",
"meaning": "Safety requirements for machines and mechanical equipment",
"applies_to": "machines and mechanical equipment",
"governing_reference": "2006/42/EC",
"id": "eu-machinery-directive",
"url": "https://referencesource.org/certification-standards-equivalence/eu-machinery-directive/",
"source": "https://ecocomply.ai/blog/what-does-ce-marking-cost-for-your-product",
"source_quote": "Machinery Directive (2006/42/EC): Safety requirements for machines and mechanical equipment",
"verified_fields": [
"applies_to",
"designation",
"governing_reference",
"meaning"
]
},
{
"designation": "MDR",
"market_or_system": "EU",
"meaning": "Medical device regulation with strict clinical and documentation requirements",
"applies_to": "medical devices",
"governing_reference": "2017/745",
"id": "eu-mdr",
"url": "https://referencesource.org/certification-standards-equivalence/eu-mdr/",
"source": "https://ecocomply.ai/blog/what-does-ce-marking-cost-for-your-product",
"source_quote": "MDR (2017/745): Medical device regulation with strict clinical and documentation requirements",
"verified_fields": [
"designation",
"governing_reference",
"meaning"
]
},
{
"designation": "Radio Equipment Directive (RED)",
"market_or_system": "EU",
"meaning": "the governing framework for any radio-transmitting device placed on the EU market",
"governing_reference": "Directive 2014/53/EU",
"id": "eu-radio-equipment-directive-red",
"url": "https://referencesource.org/certification-standards-equivalence/eu-radio-equipment-directive-red/",
"source": "https://blog.promise.legal/fcc-certification-ce-marking-connected-devices-hardware-startups/",
"source_quote": "Directive 2014/53/EU \u2014 the Radio Equipment Directive (RED) \u2014 which has applied since June 13, 2017",
"verified_fields": [
"designation",
"governing_reference",
"market_or_system"
]
},
{
"designation": "RED",
"market_or_system": "EU",
"meaning": "Radio equipment including Wi-Fi, Bluetooth, and cellular",
"applies_to": "Radio equipment including Wi-Fi, Bluetooth, and cellular",
"governing_reference": "2014/53/EU",
"id": "eu-red",
"url": "https://referencesource.org/certification-standards-equivalence/eu-red/",
"source": "https://ecocomply.ai/blog/what-does-ce-marking-cost-for-your-product",
"source_quote": "RED (2014/53/EU): Radio equipment including Wi-Fi, Bluetooth, and cellular",
"verified_fields": [
"applies_to",
"designation",
"governing_reference",
"market_or_system",
"meaning"
]
},
{
"designation": "A-deviation",
"market_or_system": "Europe",
"meaning": "Information that the provisions of an EN are in conflict with national regulation shall be included in an Annex to the European Standard, called A-deviation",
"id": "europe-a-deviation",
"url": "https://referencesource.org/certification-standards-equivalence/europe-a-deviation/",
"source": "https://boss.cenelec.eu/homegrowndeliverables/en/pages/adev/",
"source_quote": "Information that the provisions of an EN are in conflict with national regulation shall be included in an Annex to the European Standard, called A-deviation",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "CE marking",
"market_or_system": "Europe",
"meaning": "indicates that a product is declared by the manufacturer as being in conformity with European Union harmonization legislation",
"governing_reference": "EU-Regulations or EU-Directives",
"id": "europe-ce-marking",
"url": "https://referencesource.org/certification-standards-equivalence/europe-ce-marking/",
"source": "https://casco.iso.org/attestations-of-conformity.html",
"source_quote": "The CE marking is the visible consequence of the above process and indicates that a product is declared by the manufacturer as being in conformity with European Union harmonization legislation",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "EN 60335-1",
"market_or_system": "Europe",
"equivalent": "IEC 60335-1",
"meaning": "defines how appliances may comply with European directives, such as the low voltage directive",
"id": "europe-en-60335-1",
"url": "https://referencesource.org/certification-standards-equivalence/europe-en-60335-1/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "The European standard is EN 60335-1 and defines how appliances may comply with European directives, such as the low voltage directive.",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "ENEC Mark",
"market_or_system": "Europe",
"meaning": "the mark used to denote compliance with the European Norm (EN) standards for all electrical product sectors",
"id": "europe-enec-mark",
"url": "https://referencesource.org/certification-standards-equivalence/europe-enec-mark/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "ENEC Mark - Europe The ENEC Mark is simply the mark used to denote compliance with the European Norm (EN) standards for all electrical product sectors, as tested by approved independent testing laboratories worldwide.",
"verified_fields": [
"designation",
"market_or_system",
"meaning"
]
},
{
"designation": "EU Declaration of Conformity (EU-DoC)",
"market_or_system": "Europe",
"meaning": "the EU legislation imposes an obligation on the manufacturer to draw up and sign a legally binding EU Declaration of Conformity (EU-DoC) before placing the product on the market",
"governing_reference": "ISO/IEC 17050-1 and -2",
"id": "europe-eu-declaration-of-conformity-eu-doc",
"url": "https://referencesource.org/certification-standards-equivalence/europe-eu-declaration-of-conformity-eu-doc/",
"source": "https://casco.iso.org/attestations-of-conformity.html",
"source_quote": "the EU legislation imposes an obligation on the manufacturer to draw up and sign a legally binding EU Declaration of Conformity (EU-DoC) before placing the product on the market",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "European Standard (EN)",
"market_or_system": "Europe",
"meaning": "A-deviations do not release CENELEC members from their obligation to implement the relevant European Standard",
"administered_by": "CENELEC",
"id": "europe-european-standard-en",
"url": "https://referencesource.org/certification-standards-equivalence/europe-european-standard-en/",
"source": "https://boss.cenelec.eu/homegrowndeliverables/en/pages/adev/",
"source_quote": "A-deviations do not release CENELEC members from their obligation to implement the relevant European Standard",
"verified_fields": [
"administered_by",
"meaning"
]
},
{
"designation": "Notified Body",
"market_or_system": "Europe",
"meaning": "For some categories of products, involvement of a third-party conformity assessment body is necessary",
"id": "europe-notified-body",
"url": "https://referencesource.org/certification-standards-equivalence/europe-notified-body/",
"source": "https://casco.iso.org/attestations-of-conformity.html",
"source_quote": "For some categories of products, involvement of a third-party conformity assessment body"
},
{
"designation": "CE Mark",
"market_or_system": "European Economic Area",
"meaning": "a manufacturer's declaration that the product meets these requirements",
"mandatory_status": "Simple CE marking is allowed under a self-certification process if the risk level of a product is considered minimal",
"id": "european-economic-area-ce-mark",
"url": "https://referencesource.org/certification-standards-equivalence/european-economic-area-ce-mark/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "The \"Conformit\u00e9 Europ\u00e9enne\" or CE Mark The CE Mark was introduced nearly 30 years ago for certain products sold within the European Economic Area to show conformity with legal requirements in respect of relevant safety, health and environmental directives. The use of the CE logo is a manufacturer's declaration that the product meets these requirements but the logo may also include a four-digit code identifying the authorized third party (Notified Body) involved in assessing conformance. Simple CE marking is allowed under a self-certification process if the risk level of a product is considered minimal.",
"verified_fields": [
"designation",
"mandatory_status",
"market_or_system",
"meaning"
]
},
{
"designation": "Ex d / da / db / dc",
"meaning": "Flameproof",
"governing_reference": "EN/IEC 60079-1",
"id": "ex-d-da-db-dc",
"url": "https://referencesource.org/certification-standards-equivalence/ex-d-da-db-dc/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Flameproof - Ex d / da / db / dc EN/IEC 60079-1",
"verified_fields": [
"designation",
"governing_reference",
"meaning"
]
},
{
"designation": "Ex e / eb / ec",
"meaning": "Increased Safety",
"governing_reference": "EN/IEC 60079-7",
"id": "ex-e-eb-ec",
"url": "https://referencesource.org/certification-standards-equivalence/ex-e-eb-ec/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Increased Safety - Ex e / eb / ec EN/IEC 60079-7",
"verified_fields": [
"designation",
"governing_reference",
"meaning"
]
},
{
"designation": "Ex i / ia / ib / ic",
"meaning": "Intrinsic Safety",
"governing_reference": "EN/IEC 60079-11",
"id": "ex-i-ia-ib-ic",
"url": "https://referencesource.org/certification-standards-equivalence/ex-i-ia-ib-ic/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Intrinsic Safety - Ex i / ia / ib / ic EN/IEC 60079-11",
"verified_fields": [
"designation",
"governing_reference",
"meaning"
]
},
{
"designation": "Ex m / ma / mb / mc",
"governing_reference": "EN/IEC 60079-18",
"id": "ex-m-ma-mb-mc",
"url": "https://referencesource.org/certification-standards-equivalence/ex-m-ma-mb-mc/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Encapsula on - Ex m / ma / mb / mc EN/IEC 60079-18",
"verified_fields": [
"designation",
"governing_reference"
]
},
{
"designation": "Ex nA / nC / nL",
"meaning": "Non Sparking",
"governing_reference": "EN/IEC 60079-15",
"id": "ex-na-nc-nl",
"url": "https://referencesource.org/certification-standards-equivalence/ex-na-nc-nl/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Non Sparking - Ex nA / nC / nL EN/IEC 60079-15",
"verified_fields": [
"designation",
"governing_reference",
"meaning"
]
},
{
"designation": "Ex o / ob / oc",
"meaning": "Oil Immersion",
"governing_reference": "EN/IEC 60079-6",
"id": "ex-o-ob-oc",
"url": "https://referencesource.org/certification-standards-equivalence/ex-o-ob-oc/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Oil Immersion - Ex o / ob / oc EN/IEC 60079-6",
"verified_fields": [
"designation",
"governing_reference",
"meaning"
]
},
{
"designation": "Ex op is / op sh / op pr",
"governing_reference": "EN/IEC 60079-28",
"id": "ex-op-is-op-sh-op-pr",
"url": "https://referencesource.org/certification-standards-equivalence/ex-op-is-op-sh-op-pr/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Op cal Radia on - Ex op is / op sh / op pr EN/IEC 60079-28",
"verified_fields": [
"designation",
"governing_reference"
]
},
{
"designation": "Ex p / pxb / pyb / pzc",
"meaning": "Purge/Pressurised",
"governing_reference": "IEC 60079-2",
"id": "ex-p-pxb-pyb-pzc",
"url": "https://referencesource.org/certification-standards-equivalence/ex-p-pxb-pyb-pzc/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Purge/Pressurised - Ex p / pxb / pyb / pzc IEC 60079-2",
"verified_fields": [
"designation",
"governing_reference",
"meaning"
]
},
{
"designation": "Ex q / qb / qc",
"meaning": "Quartz/Sand Filled",
"governing_reference": "EN/IEC 60079-5",
"id": "ex-q-qb-qc",
"url": "https://referencesource.org/certification-standards-equivalence/ex-q-qb-qc/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Quartz/Sand Filled - Ex q / qb / qc EN/IEC 60079-5",
"verified_fields": [
"designation",
"governing_reference",
"meaning"
]
},
{
"designation": "Explosion-proof (XP)",
"equivalent": "Ex d (Flameproof)",
"meaning": "Contain the explosion inside the enclosure",
"governing_reference": "IEC 60079-1",
"id": "explosion-proof-xp",
"url": "https://referencesource.org/certification-standards-equivalence/explosion-proof-xp/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "Explosion-proof (XP) | Ex d (Flameproof) | IEC 60079-1 | Contain the explosion inside the enclosure",
"verified_fields": [
"designation",
"equivalent",
"governing_reference",
"meaning"
]
},
{
"designation": "DIN EN 60950-1",
"market_or_system": "Germany",
"equivalent": "IEC 60950-1",
"id": "germany-din-en-60950-1",
"url": "https://referencesource.org/certification-standards-equivalence/germany-din-en-60950-1/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "IEC 60950-1 consolidates the 2005 2nd edition of this standard with its first and second amendments (from 2009 and 2013 respectively). The standard is applicable to mains, or battery-powered information technology (IT) equipment and office machines with a rated voltage not exceeding 600 V. It is intended to prevent injury and damage to persons and property from such hazards as electric shock, fire, dangerous temperatures and mechanical instability. Note that in Germany this standard is also referenced as DIN EN 60950-1 and as VDE 0805.",
"verified_fields": [
"designation",
"equivalent",
"market_or_system"
]
},
{
"designation": "DIN Mark",
"market_or_system": "Germany",
"meaning": "certifying component compliance with DIN, EN, IEC and ISO product safety standards",
"administered_by": "TUV Rheinland",
"id": "germany-din-mark",
"url": "https://referencesource.org/certification-standards-equivalence/germany-din-mark/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "GS Mark and DIN Mark - Germany/EU Germany\u2019s TUV standards agency operates the GS Mark (Gepr\u00fcfte Sicherheit = tested safety) to show conformity with German\u2019s Equipment and Product Safety Act (GPSG = Ger\u00e4te- und Produktisicherheitgesetz). The GS Mark assures commercial buyers and consumers the product has been tested by an authorized institution such as TUV Rheinland. The DIN Mark is another marking scheme operated by TUV Rheinland certifying component compliance with DIN, EN, IEC and ISO product safety standards.",
"verified_fields": [
"administered_by",
"designation",
"market_or_system",
"meaning"
]
},
{
"designation": "GS Mark",
"market_or_system": "Germany",
"governing_reference": "GPSG = Ger\u00e4te- und Produktisicherheitgesetz",
"administered_by": "TUV Rheinland",
"id": "germany-gs-mark",
"url": "https://referencesource.org/certification-standards-equivalence/germany-gs-mark/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "Germany\u2019s TUV standards agency operates the GS Mark (Gepr\u00fcfte Sicherheit = tested safety) to show conformity with German\u2019s Equipment and Product Safety Act (GPSG = Ger\u00e4te- und Produktisicherheitgesetz). The GS Mark assures commercial buyers and consumers the product has been tested by an authorized institution such as TUV Rheinland.",
"verified_fields": [
"administered_by",
"designation",
"governing_reference",
"market_or_system"
]
},
{
"designation": "VDE Mark",
"market_or_system": "Germany",
"meaning": "indicates conformity with the VDE standards, European or internationally harmonized standards and confirms compliance with protective requirements of the applicable EC Directive(s)",
"administered_by": "VDE Testing and Certification Institute",
"id": "germany-vde-mark",
"url": "https://referencesource.org/certification-standards-equivalence/germany-vde-mark/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "VDE Mark - Germany The VDE Testing and Certification Institute is another German-based independent testing organization for electric and electronic products. The VDE Mark indicates conformity with the VDE standards, European or internationally harmonized standards and confirms compliance with protective requirements of the applicable EC Directive(s).",
"verified_fields": [
"administered_by",
"designation",
"market_or_system",
"meaning"
]
},
{
"designation": "Group A",
"equivalent": "IIC",
"applies_to": "Acetylene",
"id": "group-a",
"url": "https://referencesource.org/certification-standards-equivalence/group-a/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Acetylene Group A IIC",
"verified_fields": [
"applies_to",
"designation",
"equivalent"
]
},
{
"designation": "Group B",
"equivalent": "IIC",
"applies_to": "Hydrogen",
"id": "group-b",
"url": "https://referencesource.org/certification-standards-equivalence/group-b/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Hydrogen Group B IIC",
"verified_fields": [
"applies_to",
"designation",
"equivalent"
]
},
{
"designation": "Group C",
"equivalent": "IIB",
"applies_to": "Ethylene",
"id": "group-c",
"url": "https://referencesource.org/certification-standards-equivalence/group-c/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Ethylene Group C IIB",
"verified_fields": [
"applies_to",
"designation",
"equivalent"
]
},
{
"designation": "Group D",
"equivalent": "IIA",
"applies_to": "Propane",
"id": "group-d",
"url": "https://referencesource.org/certification-standards-equivalence/group-d/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Propane Group D IIA",
"verified_fields": [
"applies_to",
"designation",
"equivalent"
],
"disagreements": [
{
"field": "applies_to",
"versions": [
{
"value": "Propane",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Propane Group D IIA",
"as_of": "2026-08-11"
},
{
"value": "Methane (mining)",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Methane (mining) Group D",
"as_of": "2026-08-11"
}
]
}
]
},
{
"designation": "Group E",
"applies_to": "Combustible Metal Dusts",
"id": "group-e",
"url": "https://referencesource.org/certification-standards-equivalence/group-e/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Combustible Metal Dusts Group E",
"verified_fields": [
"applies_to",
"designation"
]
},
{
"designation": "Group F",
"applies_to": "Class II",
"id": "group-f",
"url": "https://referencesource.org/certification-standards-equivalence/group-f/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Class II Group F",
"verified_fields": [
"applies_to",
"designation"
]
},
{
"designation": "Hermetically sealed",
"equivalent": "Ex nC / Ex m",
"meaning": "Seal ignition source from atmosphere",
"governing_reference": "IEC 60079-15 / -18",
"id": "hermetically-sealed",
"url": "https://referencesource.org/certification-standards-equivalence/hermetically-sealed/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "Hermetically sealed | Ex nC / Ex m | IEC 60079-15 / -18 | Seal ignition source from atmosphere",
"verified_fields": [
"designation",
"equivalent",
"governing_reference",
"meaning"
]
},
{
"designation": "Ex d",
"market_or_system": "IEC / ATEX",
"meaning": "Flameproof enclosure",
"governing_reference": "IEC 60079 series",
"id": "iec-atex-ex-d",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-ex-d/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Ex d | Flameproof enclosure",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "Ex e",
"market_or_system": "IEC / ATEX",
"meaning": "Increased safety",
"governing_reference": "IEC 60079 series",
"id": "iec-atex-ex-e",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-ex-e/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Ex e | Increased safety",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "Ex i",
"market_or_system": "IEC / ATEX",
"meaning": "Intrinsic safety",
"governing_reference": "IEC 60079 series",
"id": "iec-atex-ex-i",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-ex-i/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Ex i | Intrinsic safety",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "Ex m",
"market_or_system": "IEC / ATEX",
"meaning": "Encapsulation",
"governing_reference": "IEC 60079 series",
"id": "iec-atex-ex-m",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-ex-m/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Ex m | Encapsulation",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "Ex p",
"market_or_system": "IEC / ATEX",
"meaning": "Pressurization",
"governing_reference": "IEC 60079 series",
"id": "iec-atex-ex-p",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-ex-p/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Ex p | Pressurization",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "IIA",
"market_or_system": "IEC / ATEX",
"applies_to": "Propane",
"id": "iec-atex-iia",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-iia/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "IIA | Propane",
"verified_fields": [
"applies_to",
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},
{
"designation": "IIB",
"market_or_system": "IEC / ATEX",
"applies_to": "Ethylene",
"id": "iec-atex-iib",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-iib/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "IIB | Ethylene",
"verified_fields": [
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},
{
"designation": "IIC",
"market_or_system": "IEC / ATEX",
"applies_to": "Hydrogen / acetylene",
"id": "iec-atex-iic",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-iic/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "IIC | Hydrogen / acetylene",
"verified_fields": [
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]
},
{
"designation": "T1",
"market_or_system": "IEC / ATEX",
"applies_to": "450\u00b0C",
"id": "iec-atex-t1",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-t1/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "T1 | 450\u00b0C",
"verified_fields": [
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]
},
{
"designation": "T2",
"market_or_system": "IEC / ATEX",
"applies_to": "300\u00b0C",
"id": "iec-atex-t2",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-t2/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "T2 | 300\u00b0C",
"verified_fields": [
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},
{
"designation": "T3",
"market_or_system": "IEC / ATEX",
"applies_to": "200\u00b0C",
"id": "iec-atex-t3",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-t3/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "T3 | 200\u00b0C",
"verified_fields": [
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]
},
{
"designation": "T4",
"market_or_system": "IEC / ATEX",
"applies_to": "135\u00b0C",
"id": "iec-atex-t4",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-t4/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "T4 | 135\u00b0C",
"verified_fields": [
"applies_to",
"designation"
]
},
{
"designation": "T5",
"market_or_system": "IEC / ATEX",
"applies_to": "100\u00b0C",
"id": "iec-atex-t5",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-t5/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "T5 | 100\u00b0C",
"verified_fields": [
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]
},
{
"designation": "T6",
"market_or_system": "IEC / ATEX",
"applies_to": "85\u00b0C",
"id": "iec-atex-t6",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-t6/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "IEC / ATEX System | Continuous hazard | Class I Division 1 | Zone 0 | Frequent hazard | Class I Division 1 | Zone 1 | Occasional hazard | Class I Division 2 | Zone 2 | Zone systems offer more precise classification of hazard frequency , while the Class/Division system is simpler and historically used in North America. Gas Group Equivalency NEC Group | IEC Group | A (Acetylene) | IIC | B (Hydrogen) | IIC | C (Ethylene) | IIB | D (Propane) | IIA | Temperature Classes Electrical equipment must also be rated according to maximum surface temperature to prevent ignition. Temperature Class | Max Surface Temp | T1 | 450\u00b0C | T2 | 300\u00b0C | T3 | 200\u00b0C | T4 | 135\u00b0C | T5 | 100\u00b0C | T6 | 85\u00b0C |",
"verified_fields": [
"applies_to",
"designation",
"market_or_system"
]
},
{
"designation": "Zone 0",
"market_or_system": "IEC / ATEX",
"meaning": "Explosive atmosphere present continuously or for long periods",
"id": "iec-atex-zone-0",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-zone-0/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Zone 0 | Explosive atmosphere present continuously or for long periods",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "Zone 1",
"market_or_system": "IEC / ATEX",
"meaning": "Explosive atmosphere likely during normal operation",
"id": "iec-atex-zone-1",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-zone-1/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Zone 1 | Explosive atmosphere likely during normal operation",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "Zone 2",
"market_or_system": "IEC / ATEX",
"meaning": "Explosive atmosphere unlikely in normal operation, only short duration eg. accidental leakage",
"id": "iec-atex-zone-2",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-zone-2/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Zone 2 | Explosive atmosphere unlikely in normal operation, only short duration eg. accidental leakage",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "Zone 20",
"market_or_system": "IEC / ATEX",
"meaning": "Combustible dust present continuously",
"id": "iec-atex-zone-20",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-zone-20/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Zone 20 | Combustible dust present continuously",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "Zone 21",
"market_or_system": "IEC / ATEX",
"meaning": "Dust likely during normal operation",
"id": "iec-atex-zone-21",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-zone-21/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Zone 21 | Dust likely during normal operation",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "Zone 22",
"market_or_system": "IEC / ATEX",
"meaning": "Dust unlikely except briefly",
"id": "iec-atex-zone-22",
"url": "https://referencesource.org/certification-standards-equivalence/iec-atex-zone-22/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Zone 22 | Dust unlikely except briefly",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "IEC 62368-1",
"market_or_system": "IEC",
"meaning": "a unified replacement for the previous two standards",
"id": "iec-iec-62368-1",
"url": "https://referencesource.org/certification-standards-equivalence/iec-iec-62368-1/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "As the distinctions between AV and ICT equipment become increasingly blurred with new technologies and markets, IEC 62368-1 is a unified replacement for the previous two standards.",
"verified_fields": [
"designation",
"market_or_system",
"meaning"
]
},
{
"designation": "IECEx",
"meaning": "IECEx certificates are increasingly accepted as the basis for national approvals in both ATEX and non-ATEX countries",
"id": "iecex",
"url": "https://referencesource.org/certification-standards-equivalence/iecex/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "IECEx as bridge: IECEx certificates are increasingly accepted as the basis for national approvals in both ATEX and non-ATEX countries, reducing duplicate testing. Over 30 countries accept IECEx directly.",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "Supplier's Declaration of Conformity (SDoC)",
"market_or_system": "International",
"meaning": "a type of conformity assessment that allows a supplier to make a first-party attestation that an object of conformity fulfils specified requirements",
"governing_reference": "ISO/IEC 17050-1:2004",
"id": "international-supplier-s-declaration-of-conformity-sdoc",
"url": "https://referencesource.org/certification-standards-equivalence/international-supplier-s-declaration-of-conformity-sdoc/",
"source": "https://casco.iso.org/attestations-of-conformity.html",
"source_quote": "SDoC is a type of conformity assessment that allows a supplier to make a first-party attestation that an object of conformity fulfils specified requirements",
"verified_fields": [
"meaning"
]
},
{
"designation": "Intrinsically Safe (IS)",
"equivalent": "Ex i (Ex ia, Ex ib)",
"meaning": "Limit energy below ignition threshold",
"governing_reference": "IEC 60079-11",
"id": "intrinsically-safe-is",
"url": "https://referencesource.org/certification-standards-equivalence/intrinsically-safe-is/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "Intrinsically Safe (IS) | Ex i (Ex ia, Ex ib) | IEC 60079-11 | Limit energy below ignition threshold",
"verified_fields": [
"designation",
"equivalent",
"governing_reference",
"meaning"
]
},
{
"designation": "PSE Mark",
"market_or_system": "Japan",
"governing_reference": "Electrical Appliance and Material Safety Law (DENAN)",
"id": "japan-pse-mark",
"url": "https://referencesource.org/certification-standards-equivalence/japan-pse-mark/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "The PSE Mark is used to show compliance with Japan's Electrical Appliance and Material Safety Law (DENAN) as applied to various classes of product and equipment.",
"verified_fields": [
"designation",
"governing_reference",
"market_or_system"
]
},
{
"designation": "KC Mark",
"market_or_system": "Korea",
"governing_reference": "Electrical Appliances and Materials Safety Control Law",
"administered_by": "Agency for Technology and Standards (KATS)",
"id": "korea-kc-mark",
"url": "https://referencesource.org/certification-standards-equivalence/korea-kc-mark/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "Korea's KC Mark is administered by its Agency for Technology and Standards (KATS) to show compliance for mandated products with the Electrical Appliances and Materials Safety Control Law. It replaced the original EK mark.",
"verified_fields": [
"administered_by",
"designation",
"governing_reference",
"market_or_system"
]
},
{
"designation": "SIRIM",
"market_or_system": "Malaysia",
"governing_reference": "Electricity Supply Act 1990",
"administered_by": "SIRIM QAS International",
"id": "malaysia-sirim",
"url": "https://referencesource.org/certification-standards-equivalence/malaysia-sirim/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "ST certification is required for switching power supplies to be imported independently or with a system into Malaysia per the Electricity Supply Act 1990. In addition to getting approval from ST, regulated products must also be tested and certified by SIRIM QAS International where they will receive the SIRIM label.",
"verified_fields": [
"administered_by",
"designation",
"governing_reference",
"market_or_system"
]
},
{
"designation": "NMX-J-521/1-ANCE",
"market_or_system": "Mexico",
"equivalent": "IEC 60335-1",
"id": "mexico-nmx-j-521-1-ance",
"url": "https://referencesource.org/certification-standards-equivalence/mexico-nmx-j-521-1-ance/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "In North America, IEC 60335-1 has been used as the basis for a tri-national standard between the United States (UL 60335-1), Canada (CAN/CSA-C22.2 No. 60335-1), and Mexico (NMX-J-521/1-ANCE).",
"verified_fields": [
"designation",
"equivalent",
"market_or_system"
]
},
{
"designation": "NOM Mark",
"market_or_system": "Mexico",
"applies_to": "household electrical appliances, IT, AV and similar equipment",
"administered_by": "ANCE",
"id": "mexico-nom-mark",
"url": "https://referencesource.org/certification-standards-equivalence/mexico-nom-mark/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "The NOM Mark identifies compliance with Mexico\u2019s \u201cNormas Oficiales Mexicanas\u201d (NOM) safety standards for household electrical appliances, IT, AV and similar equipment. ANCE is an independent body authorized to grant NOM approval in electric and gas products.",
"verified_fields": [
"administered_by",
"applies_to",
"designation",
"market_or_system"
]
},
{
"designation": "Zone 0",
"market_or_system": "NEC 500",
"meaning": "The most hazardous environments (continuous explosive atmosphere) have no direct NEC 500 equivalent",
"id": "nec-500-zone-0",
"url": "https://referencesource.org/certification-standards-equivalence/nec-500-zone-0/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "Zone 0 gap: The most hazardous environments (continuous explosive atmosphere) have no direct NEC 500 equivalent. NEC 505 and IEC both define Zone 0, requiring EPL \"a\" equipment.",
"verified_fields": [
"designation",
"market_or_system",
"meaning"
]
},
{
"designation": "A",
"market_or_system": "NEC",
"equivalent": "IIC",
"applies_to": "Acetylene",
"id": "nec-a",
"url": "https://referencesource.org/certification-standards-equivalence/nec-a/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "A (Acetylene) | IIC",
"verified_fields": [
"applies_to",
"designation",
"equivalent"
]
},
{
"designation": "Division 1",
"market_or_system": "NEC and CEC",
"equivalent": "Zone 0 / Zone 20",
"id": "nec-and-cec-division-1",
"url": "https://referencesource.org/certification-standards-equivalence/nec-and-cec-division-1/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Type of Area NEC and CEC* ATEX and IEC De\ufb01nitions General CA Class II Division 1 & 2 US Class III Division 1 & 2 FM 3600 Con nuos A place in which an explosive atmosphere is Requirements Division 1 Zone 0 / Zone 20",
"verified_fields": [
"designation",
"equivalent",
"market_or_system"
],
"disagreements": [
{
"field": "equivalent",
"versions": [
{
"value": "Zone 0 / Zone 20",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Type of Area NEC and CEC* ATEX and IEC De\ufb01nitions General CA Class II Division 1 & 2 US Class III Division 1 & 2 FM 3600 Con nuos A place in which an explosive atmosphere is Requirements Division 1 Zone 0 / Zone 20",
"as_of": "2026-08-11"
},
{
"value": "Zone 1 / Zone 21",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "NEC and CEC* ATEX and IEC De\ufb01nitions General CA Class II Division 1 & 2 US Class III Division 1 & 2 FM 3600 Con nuos A place in which an explosive atmosphere is Requirements Division 1 Zone 0 / Zone 20 CA Class III Division 1 & 2 hazard con nually present Ex US Zone 20, 21, 22 ISA 60079-0 Dust Igni on Proof (DIP) US Class II Division 1 UL 1203 Intermittent A place in which an explosive atmosphere is Division 1 CSA C22.2 No. 25 Division 1 Zone 1 / Zone 21",
"as_of": "2026-08-11"
}
]
}
]
},
{
"designation": "Division 2",
"market_or_system": "NEC and CEC",
"equivalent": "Zone 2 / Zone 22",
"id": "nec-and-cec-division-2",
"url": "https://referencesource.org/certification-standards-equivalence/nec-and-cec-division-2/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "NEC and CEC* ATEX and IEC De\ufb01nitions General CA Class II Division 1 & 2 US Class III Division 1 & 2 FM 3600 Con nuos A place in which an explosive atmosphere is Requirements Division 1 Zone 0 / Zone 20 CA Class III Division 1 & 2 hazard con nually present Ex US Zone 20, 21, 22 ISA 60079-0 Dust Igni on Proof (DIP) US Class II Division 1 UL 1203 Intermittent A place in which an explosive atmosphere is Division 1 CSA C22.2 No. 25 Division 1 Zone 1 / Zone 21 CA Class II hazard likely to occur in normal opera on Dust Protected (NI) US Class II Division 2 ISA 12.12.01 / FM 3611 Hazard under A place in which an explosive atmosphere is CA Class II Division 2 CSA C22.2 No. 25 abnormal Division 2 Zone 2 / Zone 22",
"verified_fields": [
"designation",
"equivalent",
"market_or_system"
]
},
{
"designation": "B",
"market_or_system": "NEC",
"equivalent": "IIC",
"applies_to": "Hydrogen",
"id": "nec-b",
"url": "https://referencesource.org/certification-standards-equivalence/nec-b/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "B (Hydrogen) | IIC",
"verified_fields": [
"applies_to",
"designation",
"equivalent"
]
},
{
"designation": "C",
"market_or_system": "NEC",
"equivalent": "IIB",
"applies_to": "Ethylene",
"id": "nec-c",
"url": "https://referencesource.org/certification-standards-equivalence/nec-c/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "C (Ethylene) | IIB",
"verified_fields": [
"applies_to",
"designation",
"equivalent"
]
},
{
"designation": "Class I",
"market_or_system": "NEC",
"meaning": "Flammable gases and vapors",
"id": "nec-class-i",
"url": "https://referencesource.org/certification-standards-equivalence/nec-class-i/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Class I | Flammable gases and vapors",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "Class I Division 1",
"market_or_system": "NEC",
"equivalent": "Zone 0",
"meaning": "Continuous hazard",
"id": "nec-class-i-division-1",
"url": "https://referencesource.org/certification-standards-equivalence/nec-class-i-division-1/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Continuous hazard | Class I Division 1 | Zone 0",
"verified_fields": [
"designation",
"equivalent",
"meaning"
],
"disagreements": [
{
"field": "equivalent",
"versions": [
{
"value": "Zone 0",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Continuous hazard | Class I Division 1 | Zone 0",
"as_of": "2026-08-11"
},
{
"value": "Zone 1",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Frequent hazard | Class I Division 1 | Zone 1",
"as_of": "2026-08-11"
}
]
},
{
"field": "meaning",
"versions": [
{
"value": "Continuous hazard",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Continuous hazard | Class I Division 1 | Zone 0",
"as_of": "2026-08-11"
},
{
"value": "Frequent hazard",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Frequent hazard | Class I Division 1 | Zone 1",
"as_of": "2026-08-11"
}
]
}
]
},
{
"designation": "Class I Division 2",
"market_or_system": "NEC",
"equivalent": "Zone 2",
"meaning": "Occasional hazard",
"id": "nec-class-i-division-2",
"url": "https://referencesource.org/certification-standards-equivalence/nec-class-i-division-2/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Occasional hazard | Class I Division 2 | Zone 2",
"verified_fields": [
"designation",
"equivalent",
"meaning"
]
},
{
"designation": "Class II",
"market_or_system": "NEC",
"meaning": "Combustible dust",
"id": "nec-class-ii",
"url": "https://referencesource.org/certification-standards-equivalence/nec-class-ii/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Class II | Combustible dust",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "Class III",
"market_or_system": "NEC",
"meaning": "Ignitable fibers",
"id": "nec-class-iii",
"url": "https://referencesource.org/certification-standards-equivalence/nec-class-iii/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Class III | Ignitable fibers",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "D",
"market_or_system": "NEC",
"equivalent": "IIA",
"applies_to": "Propane",
"id": "nec-d",
"url": "https://referencesource.org/certification-standards-equivalence/nec-d/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "D (Propane) | IIA",
"verified_fields": [
"applies_to",
"designation",
"equivalent"
]
},
{
"designation": "Division 1",
"market_or_system": "NEC",
"meaning": "Hazard present during normal operation",
"id": "nec-division-1",
"url": "https://referencesource.org/certification-standards-equivalence/nec-division-1/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Division 1 | Hazard present during normal operation",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "Division 2",
"market_or_system": "NEC",
"meaning": "Hazard present only under abnormal conditions",
"id": "nec-division-2",
"url": "https://referencesource.org/certification-standards-equivalence/nec-division-2/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "Division 2 | Hazard present only under abnormal conditions",
"verified_fields": [
"designation",
"meaning"
]
},
{
"designation": "E",
"market_or_system": "NEC",
"applies_to": "Metal dust",
"id": "nec-e",
"url": "https://referencesource.org/certification-standards-equivalence/nec-e/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "E | Metal dust",
"verified_fields": [
"applies_to",
"designation"
]
},
{
"designation": "F",
"market_or_system": "NEC",
"applies_to": "Carbon dust",
"id": "nec-f",
"url": "https://referencesource.org/certification-standards-equivalence/nec-f/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "F | Carbon dust",
"verified_fields": [
"applies_to",
"designation"
]
},
{
"designation": "G",
"market_or_system": "NEC",
"applies_to": "Grain / flour dust",
"id": "nec-g",
"url": "https://referencesource.org/certification-standards-equivalence/nec-g/",
"source": "https://www.inframena.com/hazardous-area-classification-equivalency-guide/",
"source_quote": "G | Grain / flour dust",
"verified_fields": [
"applies_to",
"designation"
]
},
{
"designation": "Supplier's declaration of conformity",
"market_or_system": "New Zealand",
"meaning": "required before placing on the market any low voltage or extra-low voltage fittings or appliances that have been declared as medium risk by the regulator",
"governing_reference": "Electricity (Safety) Regulations 2010",
"id": "new-zealand-supplier-s-declaration-of-conformity",
"url": "https://referencesource.org/certification-standards-equivalence/new-zealand-supplier-s-declaration-of-conformity/",
"source": "https://casco.iso.org/attestations-of-conformity.html",
"source_quote": "Under the Electricity (Safety) Regulations 2010, a supplier’s declaration of conformity is required before placing on the market any low voltage or extra-low voltage fittings or appliances that have been declared as medium risk by the regulator",
"verified_fields": [
"governing_reference",
"meaning"
]
},
{
"designation": "Non-incendive",
"equivalent": "Ex nA / Ex ec",
"meaning": "Normal operation cannot cause ignition",
"governing_reference": "IEC 60079-15 / -7",
"id": "non-incendive",
"url": "https://referencesource.org/certification-standards-equivalence/non-incendive/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "Non-incendive | Ex nA / Ex ec | IEC 60079-15 / -7 | Normal operation cannot cause ignition",
"verified_fields": [
"designation",
"equivalent",
"governing_reference",
"meaning"
]
},
{
"designation": "Nemko Mark",
"market_or_system": "Norway",
"meaning": "signifies that Nemko has tested or certified the product according to national standards in Norway",
"administered_by": "Nemko",
"id": "norway-nemko-mark",
"url": "https://referencesource.org/certification-standards-equivalence/norway-nemko-mark/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "Nemko Mark - Norway Nemko is an organization similar to TUV or UL that offers product safety testing and certification to worldwide standards. Its direct services cover IT/AV, household and telecoms products but extends to other sectors such as medical equipment, and the oil and gas industry. The mark itself signifies that Nemko has tested or certified the product according to national standards in Norway.",
"verified_fields": [
"administered_by",
"designation",
"market_or_system",
"meaning"
]
},
{
"designation": "Purged/Pressurized",
"equivalent": "Ex p (Ex px, Ex py, Ex pz)",
"meaning": "Maintain positive pressure with inert gas",
"governing_reference": "IEC 60079-2",
"id": "purged-pressurized",
"url": "https://referencesource.org/certification-standards-equivalence/purged-pressurized/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "Purged/Pressurized | Ex p (Ex px, Ex py, Ex pz) | IEC 60079-2 | Maintain positive pressure with inert gas",
"verified_fields": [
"designation",
"equivalent",
"governing_reference",
"meaning"
]
},
{
"designation": "EAC",
"market_or_system": "Russia",
"meaning": "used to indicate products that meet all of the technical requirements of the Eurasian Customs Union",
"id": "russia-eac",
"url": "https://referencesource.org/certification-standards-equivalence/russia-eac/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "EAC Mark - Russia The Eurasian Conformity (EAC) mark has replaced the previous GOST-R and PCT national certification standards and marks. This mark is used to indicate products that meet all of the technical requirements of the Eurasian Customs Union.",
"verified_fields": [
"designation",
"market_or_system",
"meaning"
]
},
{
"designation": "SAFETY Mark",
"market_or_system": "Singapore",
"administered_by": "Productivity and Standards Board (PSB)",
"mandatory_status": "requires all controlled goods to be individually marked",
"id": "singapore-safety-mark",
"url": "https://referencesource.org/certification-standards-equivalence/singapore-safety-mark/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "Singapore's safety authority, the Productivity and Standards Board (PSB), requires all controlled goods to be individually marked with the SAFETY Mark.",
"verified_fields": [
"administered_by",
"designation",
"mandatory_status",
"market_or_system"
]
},
{
"designation": "T1",
"equivalent": "T1",
"applies_to": "450\u00ba C (842\u00baF)",
"id": "t1",
"url": "https://referencesource.org/certification-standards-equivalence/t1/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "450\u00ba C (842\u00baF) T1 T1 T1",
"verified_fields": [
"applies_to",
"designation",
"equivalent"
]
},
{
"designation": "T2",
"applies_to": "300\u00ba C (572\u00baF)",
"id": "t2",
"url": "https://referencesource.org/certification-standards-equivalence/t2/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "300\u00ba C (572\u00baF) T2",
"verified_fields": [
"applies_to",
"designation"
]
},
{
"designation": "T2A",
"applies_to": "280\u00ba C (536\u00baF)",
"id": "t2a",
"url": "https://referencesource.org/certification-standards-equivalence/t2a/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "280\u00ba C (536\u00baF) T2A",
"verified_fields": [
"applies_to",
"designation"
]
},
{
"designation": "T2B",
"equivalent": "T2",
"applies_to": "260\u00ba C (500\u00baF)",
"id": "t2b",
"url": "https://referencesource.org/certification-standards-equivalence/t2b/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "260\u00ba C (500\u00baF) T2B T2 T2",
"verified_fields": [
"applies_to",
"designation",
"equivalent"
]
},
{
"designation": "T2C",
"applies_to": "230\u00ba C (446\u00baF)",
"id": "t2c",
"url": "https://referencesource.org/certification-standards-equivalence/t2c/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "230\u00ba C (446\u00baF) T2C",
"verified_fields": [
"applies_to",
"designation"
]
},
{
"designation": "T2D",
"applies_to": "215\u00ba C (419\u00baF)",
"id": "t2d",
"url": "https://referencesource.org/certification-standards-equivalence/t2d/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "215\u00ba C (419\u00baF) T2D",
"verified_fields": [
"applies_to",
"designation"
]
},
{
"designation": "T3",
"applies_to": "200\u00ba C (392\u00baF)",
"id": "t3",
"url": "https://referencesource.org/certification-standards-equivalence/t3/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "200\u00ba C (392\u00baF) T3",
"verified_fields": [
"applies_to",
"designation"
]
},
{
"designation": "T3A",
"applies_to": "180\u00ba C (356\u00baF)",
"id": "t3a",
"url": "https://referencesource.org/certification-standards-equivalence/t3a/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "180\u00ba C (356\u00baF) T3A",
"verified_fields": [
"applies_to",
"designation"
]
},
{
"designation": "T3B",
"applies_to": "165\u00ba C (329\u00baF)",
"id": "t3b",
"url": "https://referencesource.org/certification-standards-equivalence/t3b/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "165\u00ba C (329\u00baF) T3B",
"verified_fields": [
"applies_to",
"designation"
]
},
{
"designation": "T3C",
"applies_to": "160\u00ba C (320\u00baF)",
"id": "t3c",
"url": "https://referencesource.org/certification-standards-equivalence/t3c/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "160\u00ba C (320\u00baF) T3C",
"verified_fields": [
"applies_to",
"designation"
]
},
{
"designation": "T4",
"applies_to": "135\u00ba C (275\u00baF)",
"id": "t4",
"url": "https://referencesource.org/certification-standards-equivalence/t4/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "135\u00ba C (275\u00baF) T4",
"verified_fields": [
"applies_to",
"designation"
]
},
{
"designation": "T4A",
"applies_to": "120\u00ba C (248\u00baF)",
"id": "t4a",
"url": "https://referencesource.org/certification-standards-equivalence/t4a/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "120\u00ba C (248\u00baF) T4A",
"verified_fields": [
"applies_to",
"designation"
]
},
{
"designation": "T5",
"equivalent": "T5",
"applies_to": "100\u00ba C (212\u00baF)",
"id": "t5",
"url": "https://referencesource.org/certification-standards-equivalence/t5/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "100\u00ba C (212\u00baF) T5 T5 T5",
"verified_fields": [
"applies_to",
"designation",
"equivalent"
]
},
{
"designation": "T6",
"equivalent": "T6",
"applies_to": "85\u00ba C (185\u00baF)",
"id": "t6",
"url": "https://referencesource.org/certification-standards-equivalence/t6/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "85\u00ba C (185\u00baF) T6 T6 T6",
"verified_fields": [
"applies_to",
"designation",
"equivalent"
]
},
{
"designation": "ta / tb / tc",
"meaning": "Enclosure",
"governing_reference": "EN/IEC 60079-31",
"id": "ta-tb-tc",
"url": "https://referencesource.org/certification-standards-equivalence/ta-tb-tc/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Enclosure - ta / tb / tc EN/IEC 60079-31",
"verified_fields": [
"designation",
"governing_reference",
"meaning"
]
},
{
"designation": "BSMI",
"market_or_system": "Taiwan",
"applies_to": "ITE and audio/ video products",
"administered_by": "Bureau of Standards, Metrology and Inspection",
"id": "taiwan-bsmi",
"url": "https://referencesource.org/certification-standards-equivalence/taiwan-bsmi/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "The BSMI (Bureau of Standards, Metrology and Inspection) Certification is the approval scheme for ITE and audio/ video products in Taiwan.",
"verified_fields": [
"administered_by",
"applies_to",
"designation",
"market_or_system"
]
},
{
"designation": "BS EN IEC 60335",
"market_or_system": "UK",
"equivalent": "IEC 60335",
"meaning": "Identical adoption ensures UK manufacturers meet both European and international safety expectations",
"applies_to": "Safety rules for household appliances",
"id": "uk-bs-en-iec-60335",
"url": "https://referencesource.org/certification-standards-equivalence/uk-bs-en-iec-60335/",
"source": "https://knowledge.bsigroup.com/articles/just-how-identical-are-identical-standards",
"source_quote": "Identical adoption ensures UK manufacturers meet both European and international safety expectations",
"verified_fields": [
"market_or_system",
"meaning"
]
},
{
"designation": "BS EN ISO 14001:2015",
"market_or_system": "UK",
"equivalent": "ISO 14001",
"meaning": "Identical adoption ensures UK businesses comply with international and European requirements",
"applies_to": "Environmental management",
"id": "uk-bs-en-iso-14001-2015",
"url": "https://referencesource.org/certification-standards-equivalence/uk-bs-en-iso-14001-2015/",
"source": "https://knowledge.bsigroup.com/articles/just-how-identical-are-identical-standards",
"source_quote": "Identical adoption ensures UK businesses comply with international and European requirements",
"verified_fields": [
"market_or_system",
"meaning"
]
},
{
"designation": "BS EN ISO 9001",
"market_or_system": "UK",
"equivalent": "ISO 9001",
"meaning": "if you're compliant with BS EN ISO 9001 in the UK, it's equal to compliance with both ISO 9001 internationally and EN ISO 9001 in Europe",
"id": "uk-bs-en-iso-9001",
"url": "https://referencesource.org/certification-standards-equivalence/uk-bs-en-iso-9001/",
"source": "https://knowledge.bsigroup.com/articles/just-how-identical-are-identical-standards",
"source_quote": "ISO 9001 on quality management systems is adopted in Europe as EN ISO 9001, and in the UK as BS EN ISO 9001.",
"verified_fields": [
"designation",
"equivalent",
"market_or_system"
]
},
{
"designation": "BSI Kitemark",
"market_or_system": "UK",
"administered_by": "British Standards Institution (BSI)",
"mandatory_status": "voluntary certification mark",
"id": "uk-bsi-kitemark",
"url": "https://referencesource.org/certification-standards-equivalence/uk-bsi-kitemark/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "BSI Kitemark - UK The British Standards Institution (BSI) was the world's first national standards body and continues to be a leading global standards maker. BSI is also the UK's National Standards Body, representing UK interests worldwide. The BSI Kitemark is a voluntary certification mark, globally recognized as a symbol of trust, that shows a product or service meets applicable and appropriate British, European, International and other standards for quality, safety, performance and trust.",
"verified_fields": [
"administered_by",
"designation",
"mandatory_status",
"market_or_system"
]
},
{
"designation": "UL Mark",
"meaning": "tested and determined that a product meets UL specified product safety requirements",
"administered_by": "Underwriters Laboratories",
"id": "ul-mark",
"url": "https://referencesource.org/certification-standards-equivalence/ul-mark/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "UL Mark indicates that either Underwriters Laboratories or an equivalent nationally recognized testing laboratory (NRTL) has tested and determined that a product meets UL specified product safety requirements.",
"verified_fields": [
"administered_by",
"designation",
"meaning"
]
},
{
"designation": "UL 60335-1",
"market_or_system": "United States",
"equivalent": "IEC 60335-1",
"id": "united-states-ul-60335-1",
"url": "https://referencesource.org/certification-standards-equivalence/united-states-ul-60335-1/",
"source": "https://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks",
"source_quote": "In North America, IEC 60335-1 has been used as the basis for a tri-national standard between the United States (UL 60335-1), Canada (CAN/CSA-C22.2 No. 60335-1), and Mexico (NMX-J-521/1-ANCE).",
"verified_fields": [
"designation",
"equivalent",
"market_or_system"
]
},
{
"designation": "AEx d",
"market_or_system": "US",
"equivalent": "Zone 1",
"meaning": "Flame Proof",
"applies_to": "Class I",
"governing_reference": "ISA 60079-1",
"id": "us-aex-d",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-d/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Flame Proof AEx d US Class I Zone 1 ISA 60079-1",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system",
"meaning"
]
},
{
"designation": "AEx e",
"market_or_system": "US",
"equivalent": "Zone 1",
"meaning": "Increased Safety",
"applies_to": "Class I",
"governing_reference": "ISA 60079-7",
"id": "us-aex-e",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-e/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Increased Safety AEx e US Class I Zone 1 ISA 60079-7",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system",
"meaning"
]
},
{
"designation": "AEx ia",
"market_or_system": "US",
"equivalent": "Zone 0",
"meaning": "Intrinsic Safety",
"applies_to": "Class I",
"governing_reference": "ISA 60079-11",
"id": "us-aex-ia",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-ia/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Intrinsic Safety AEx ia US Class I Zone 0 ISA 60079-11",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system",
"meaning"
]
},
{
"designation": "AEx iaD",
"market_or_system": "US",
"equivalent": "Zone 20",
"governing_reference": "ISA 61241-11",
"id": "us-aex-iad",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-iad/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "AEx iaD US Zone 20 ISA 61241-11",
"verified_fields": [
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "AEx ib",
"market_or_system": "US",
"equivalent": "Zone 1",
"applies_to": "Class I",
"governing_reference": "ISA 60079-11",
"id": "us-aex-ib",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-ib/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "AEx ib US Class I Zone 1 ISA 60079-11",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "AEx ibD",
"market_or_system": "US",
"equivalent": "Zone 21",
"governing_reference": "ISA 61241-11",
"id": "us-aex-ibd",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-ibd/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "AEx ibD US Zone 21 ISA 61241-11",
"verified_fields": [
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "AEx m",
"market_or_system": "US",
"equivalent": "Zone 1",
"applies_to": "Class I",
"governing_reference": "ISA 60079-18",
"id": "us-aex-m",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-m/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "AEx m US Class I Zone 1 ISA 60079-18",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "AEx ma",
"market_or_system": "US",
"equivalent": "Zone 0",
"applies_to": "Class I",
"governing_reference": "ISA 60079-18",
"id": "us-aex-ma",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-ma/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "AEx ma US Class I Zone 0 ISA 60079-18",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "AEx mb",
"market_or_system": "US",
"equivalent": "Zone 1",
"applies_to": "Class I",
"governing_reference": "ISA 60079-18",
"id": "us-aex-mb",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-mb/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "AEx mb US Class I Zone 1 ISA 60079-18",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "AEx mbD",
"market_or_system": "US",
"equivalent": "Zone 21",
"governing_reference": "ISA 61241-18",
"id": "us-aex-mbd",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-mbd/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "AEx mbD US Zone 21 ISA 61241-18",
"verified_fields": [
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "AEx nA",
"market_or_system": "US",
"equivalent": "Zone 2",
"applies_to": "Class I",
"governing_reference": "ISA 60079-15",
"id": "us-aex-na",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-na/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "AEx nA US Class I Zone 2 ISA 60079-15",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "AEx nC",
"market_or_system": "US",
"equivalent": "Zone 2",
"meaning": "Enclosed Break",
"applies_to": "Class I",
"governing_reference": "ISA 60079-15",
"id": "us-aex-nc",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-nc/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Enclosed Break AEx nC US Class I Zone 2 ISA 60079-15",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system",
"meaning"
],
"disagreements": [
{
"field": "meaning",
"versions": [
{
"value": "Enclosed Break",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Enclosed Break AEx nC US Class I Zone 2 ISA 60079-15",
"as_of": "2026-08-11"
},
{
"value": "Limited Energy",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Limited Energy AEx nC US Class I Zone 2 ISA 60079-15",
"as_of": "2026-08-11"
}
]
}
]
},
{
"designation": "AEx nR",
"market_or_system": "US",
"equivalent": "Zone 2",
"applies_to": "Class I",
"governing_reference": "ISA 60079-15",
"id": "us-aex-nr",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-nr/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Restricted AEx nR US Class I Zone 2 ISA 60079-15",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "AEx o",
"market_or_system": "US",
"equivalent": "Zone 1",
"applies_to": "Class I",
"governing_reference": "ISA 60079-6",
"id": "us-aex-o",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-o/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Oil Emmersion AEx o US Class I Zone 1 ISA 60079-6",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "AEx pD",
"market_or_system": "US",
"equivalent": "Zone 21",
"governing_reference": "ISA 61241-2",
"id": "us-aex-pd",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-pd/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "AEx pD US Zone 21 ISA 61241-2",
"verified_fields": [
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "AEx px",
"market_or_system": "US",
"equivalent": "Zone 1",
"applies_to": "Class I",
"governing_reference": "ISA 60079-2",
"id": "us-aex-px",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-px/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "AEx px US Class I Zone 1 ISA 60079-2",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "AEx py",
"market_or_system": "US",
"equivalent": "Zone 1",
"applies_to": "Class I",
"governing_reference": "ISA 60079-2",
"id": "us-aex-py",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-py/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "AEx py US Class I Zone 1 ISA 60079-2",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "AEx pz",
"market_or_system": "US",
"equivalent": "Zone 2",
"applies_to": "Class I",
"governing_reference": "ISA 60079-2",
"id": "us-aex-pz",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-pz/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "AEx pz US Class I Zone 2 ISA 60079-2",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "AEx q",
"market_or_system": "US",
"equivalent": "Zone 1",
"meaning": "Power Filled",
"applies_to": "Class I",
"governing_reference": "ISA 60079-5",
"id": "us-aex-q",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-q/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Power Filled AEx q US Class I Zone 1 ISA 60079-5",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system",
"meaning"
]
},
{
"designation": "AEx tD",
"market_or_system": "US",
"equivalent": "Zone 21",
"governing_reference": "ISA 60079-31",
"id": "us-aex-td",
"url": "https://referencesource.org/certification-standards-equivalence/us-aex-td/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "AEx tD US Zone 21 ISA 60079-31",
"verified_fields": [
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "ATEX/IECEx certification",
"market_or_system": "US",
"meaning": "not recognized in the US or Canada",
"id": "us-atex-iecex-certification",
"url": "https://referencesource.org/certification-standards-equivalence/us-atex-iecex-certification/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "ATEX/IECEx certification is not recognized in the US or Canada.",
"verified_fields": [
"designation",
"market_or_system",
"meaning"
]
},
{
"designation": "Declaration of Conformity",
"market_or_system": "US",
"meaning": "the U.S. Federal Communications Commission (FCC) has adopted a rule that permits recognition of SDoC (also sometimes called Self Declaration of Conformity) for certain information technology devices",
"administered_by": "Federal Communications Commission (FCC)",
"id": "us-declaration-of-conformity",
"url": "https://referencesource.org/certification-standards-equivalence/us-declaration-of-conformity/",
"source": "https://casco.iso.org/attestations-of-conformity.html",
"source_quote": "the U.S. Federal Communications Commission (FCC) has adopted a rule that permits recognition of SDoC (also sometimes called Self Declaration of Conformity) for certain information technology devices",
"verified_fields": [
"administered_by",
"designation",
"meaning"
]
},
{
"designation": "(DIP)",
"market_or_system": "US",
"equivalent": "Division 1",
"applies_to": "Class II",
"governing_reference": "UL 1203",
"id": "us-dip",
"url": "https://referencesource.org/certification-standards-equivalence/us-dip/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(DIP) US Class II Division 1 UL 1203",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "Ex",
"market_or_system": "US",
"equivalent": "Zone 20, 21, 22",
"governing_reference": "ISA 60079-0",
"id": "us-ex",
"url": "https://referencesource.org/certification-standards-equivalence/us-ex/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Ex US Zone 20, 21, 22 ISA 60079-0",
"verified_fields": [
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "FCC Certification",
"market_or_system": "US",
"meaning": "any intentional radiator \u2014 a device designed to transmit RF for communication purposes, including Wi-Fi, Bluetooth, LTE, Zigbee, and similar protocols \u2014 must obtain FCC Certification through an accredited Telecommunications Certification Body (TCB) before it can be marketed in the US",
"governing_reference": "47 CFR \u00a7 15.201",
"administered_by": "Telecommunications Certification Body (TCB)",
"mandatory_status": "non-negotiable for anything with a wireless stack",
"id": "us-fcc-certification",
"url": "https://referencesource.org/certification-standards-equivalence/us-fcc-certification/",
"source": "https://blog.promise.legal/fcc-certification-ce-marking-connected-devices-hardware-startups/",
"source_quote": "any intentional radiator \u2014 a device designed to transmit RF for communication purposes, including Wi-Fi, Bluetooth, LTE, Zigbee, and similar protocols \u2014 must obtain FCC Certification through an accredited Telecommunications Certification Body (TCB) before it can be marketed in the US",
"verified_fields": [
"administered_by",
"designation",
"market_or_system",
"meaning"
]
},
{
"designation": "(IS)",
"market_or_system": "US",
"equivalent": "Division 1",
"applies_to": "Class I",
"governing_reference": "UL 913 / FM 3610",
"id": "us-is",
"url": "https://referencesource.org/certification-standards-equivalence/us-is/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(IS) US Class I Division 1 UL 913 / FM 3610",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
],
"disagreements": [
{
"field": "applies_to",
"versions": [
{
"value": "Class I",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(IS) US Class I Division 1 UL 913 / FM 3610",
"as_of": "2026-08-11"
},
{
"value": "Class II",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(IS) US Class II Division 1 UL 913 / FM 3610",
"as_of": "2026-08-11"
},
{
"value": "Class III",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(IS) US Class III Division 1 UL 913 / FM 3610",
"as_of": "2026-08-11"
}
]
}
]
},
{
"designation": "NEC 505",
"market_or_system": "US",
"meaning": "NEC 505 (Zone-based) is accepted in the US and provides easier mapping from IEC zones",
"id": "us-nec-505",
"url": "https://referencesource.org/certification-standards-equivalence/us-nec-505/",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "NEC 505 (Zone-based) is accepted in the US and provides easier mapping from IEC zones",
"verified_fields": [
"designation",
"market_or_system",
"meaning"
]
},
{
"designation": "(NI)",
"market_or_system": "US",
"equivalent": "Division 2",
"meaning": "Non-Incendive",
"applies_to": "Class I",
"governing_reference": "ISA 12.12.01/FM 3611",
"id": "us-ni",
"url": "https://referencesource.org/certification-standards-equivalence/us-ni/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Non-Incendive (NI) US Class I Division 2 ISA 12.12.01/FM 3611",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system",
"meaning"
],
"disagreements": [
{
"field": "meaning",
"versions": [
{
"value": "Non-Incendive",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Non-Incendive (NI) US Class I Division 2 ISA 12.12.01/FM 3611",
"as_of": "2026-08-11"
},
{
"value": "Dust Protected",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Dust Protected (NI) US Class II Division 2 ISA 12.12.01 / FM 3611",
"as_of": "2026-08-11"
}
]
},
{
"field": "applies_to",
"versions": [
{
"value": "Class I",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Non-Incendive (NI) US Class I Division 2 ISA 12.12.01/FM 3611",
"as_of": "2026-08-11"
},
{
"value": "Class II",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Dust Protected (NI) US Class II Division 2 ISA 12.12.01 / FM 3611",
"as_of": "2026-08-11"
}
]
},
{
"field": "governing_reference",
"versions": [
{
"value": "ISA 12.12.01/FM 3611",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Non-Incendive (NI) US Class I Division 2 ISA 12.12.01/FM 3611",
"as_of": "2026-08-11"
},
{
"value": "ISA 12.12.01 / FM 3611",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Dust Protected (NI) US Class II Division 2 ISA 12.12.01 / FM 3611",
"as_of": "2026-08-11"
}
]
}
]
},
{
"designation": "(PX)",
"market_or_system": "US",
"equivalent": "Division 1",
"applies_to": "Class II",
"governing_reference": "NFPA 496 (FM 3620)",
"id": "us-px",
"url": "https://referencesource.org/certification-standards-equivalence/us-px/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(PX) US Class II Division 1 NFPA 496 (FM 3620)",
"verified_fields": [
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]
},
{
"designation": "(PZ)",
"market_or_system": "US",
"equivalent": "Division 2",
"applies_to": "Class II",
"governing_reference": "NFPA 496 (FM 3620)",
"id": "us-pz",
"url": "https://referencesource.org/certification-standards-equivalence/us-pz/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "(PZ) US Class II Division 2 NFPA 496 (FM 3620)",
"verified_fields": [
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"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "Supplier's Declaration of Conformity (SDoC)",
"market_or_system": "US",
"meaning": "a self-certification path under which the manufacturer tests to FCC limits internally and publishes a declaration",
"applies_to": "unintentional radiator",
"administered_by": "Federal Communications Commission (FCC)",
"id": "us-supplier-s-declaration-of-conformity-sdoc",
"url": "https://referencesource.org/certification-standards-equivalence/us-supplier-s-declaration-of-conformity-sdoc/",
"source": "https://blog.promise.legal/fcc-certification-ce-marking-connected-devices-hardware-startups/",
"source_quote": "a self-certification path under which the manufacturer tests to FCC limits internally and publishes a declaration",
"verified_fields": [
"meaning"
]
},
{
"designation": "Type X",
"market_or_system": "US",
"equivalent": "Division 1",
"applies_to": "Class I",
"governing_reference": "NFPA 496 (FM 3620)",
"id": "us-type-x",
"url": "https://referencesource.org/certification-standards-equivalence/us-type-x/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Type X US Class I Division 1 NFPA 496 (FM 3620)",
"verified_fields": [
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"designation",
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"governing_reference",
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]
},
{
"designation": "Type Y",
"market_or_system": "US",
"equivalent": "Division 1",
"applies_to": "Class I",
"governing_reference": "NFPA 496 (FM 3620)",
"id": "us-type-y",
"url": "https://referencesource.org/certification-standards-equivalence/us-type-y/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Type Y US Class I Division 1 NFPA 496 (FM 3620)",
"verified_fields": [
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"designation",
"equivalent",
"governing_reference",
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]
},
{
"designation": "Type Z",
"market_or_system": "US",
"equivalent": "Division 2",
"applies_to": "Class I",
"governing_reference": "NFPA 496 (FM 3620)",
"id": "us-type-z",
"url": "https://referencesource.org/certification-standards-equivalence/us-type-z/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Type Z US Class I Division 2 NFPA 496 (FM 3620)",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system"
]
},
{
"designation": "UL standard",
"market_or_system": "US",
"meaning": "a published set of best practices for testing and evaluating the safety, security, and sustainability of a product or system",
"administered_by": "UL Standards & Engagement",
"mandatory_status": "Standards are voluntary but can become mandatory and legally binding if referenced in adopted code, written into law, or required by a government agency like the U.S. Consumer Product Safety Commission",
"id": "us-ul-standard",
"url": "https://referencesource.org/certification-standards-equivalence/us-ul-standard/",
"source": "https://ulse.org/standards/",
"source_quote": "Standards are voluntary but can become mandatory and legally binding if referenced in adopted code, written into law, or required by a government agency like the U.S. Consumer Product Safety Commission",
"verified_fields": [
"mandatory_status"
]
},
{
"designation": "(XP)",
"market_or_system": "US",
"equivalent": "Division 1",
"meaning": "Explosion Proof",
"applies_to": "Class I",
"governing_reference": "UL 1203",
"id": "us-xp",
"url": "https://referencesource.org/certification-standards-equivalence/us-xp/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Explosion Proof (XP) US Class I Division 1 UL 1203",
"verified_fields": [
"applies_to",
"designation",
"equivalent",
"governing_reference",
"market_or_system",
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]
},
{
"designation": "Zone 0",
"equivalent": "1G",
"id": "zone-0",
"url": "https://referencesource.org/certification-standards-equivalence/zone-0/",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Zone 0 1G Ga",
"verified_fields": [
"designation",
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],
"also_reported": [
{
"field": "meaning",
"value": "Explosive atmosphere continuously or for long periods (>1000 hrs/yr)",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "Zone 0 | Explosive atmosphere continuously or for long periods (>1000 hrs/yr)",
"as_of": "2026-08-11"
}
],
"disagreements": []
}
]
}