73 records

Which certification mark is accepted in this market?

73 records covering 71 designations, one fact each. Every value is transcribed from the source that states it and carries the sentence it was taken from: 14 sources across 12 sites, last checked 2026-08-11, due for re-check by 2027-08-11. Every record is listed below, each linking the page its value came from.

Cite as: Certification marks and hazardous-area classifications: cross-market equivalences, referencesource.org/certification-standards-equivalence/, checked 2026-08-11.

About this data

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' — questions where the honest answer is often that there is no direct equivalent, and saying so is the value.

The data

Where this came from

Every record above links the page it was taken from and quotes the sentence that states it. These are the 14 sources this dataset was assembled from.

• boss.cenelec.euhttps://boss.cenelec.eu/homegrowndeliverables/en/pages/adev/
• exknowledge.comhttps://exknowledge.com/pages/nec-500-vs-atex-iec.html
• knowledge.bsigroup.comhttps://knowledge.bsigroup.com/articles/just-how-identical-are-identical-standards
• belfuse.comhttps://www.belfuse.com/resource-library/tech-paper/power-supply-safety-standards-agencies-and-marks
• nist.govhttps://www.nist.gov/standardsgov/compliance-faqs-ce-marking
• blog.promise.legalhttps://blog.promise.legal/fcc-certification-ce-marking-connected-devices-hardware-startups/
• casco.iso.orghttps://casco.iso.org/attestations-of-conformity.html
• euroswitch.comhttps://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf
• tuvsud.comhttps://www.tuvsud.com/en-us/services/product-certification/iecee-cb-scheme
• single-market-economy.ec.europa.euhttps://single-market-economy.ec.europa.eu/sectors/electrical-and-electronic-engineering-industries-eei/low-voltage-directive-lvd_en
• single-market-economy.ec.europa.euhttps://single-market-economy.ec.europa.eu/sectors/mechanical-engineering/machinery_en
• health.ec.europa.euhttps://health.ec.europa.eu/medical-devices-sector/new-regulations/guidance-mdcg-endorsed-documents-and-other-guidance_en
• single-market-economy.ec.europa.euhttps://single-market-economy.ec.europa.eu/sectors/electrical-and-electronic-engineering-industries-eei/radio-equipment-directive-red_en
• ulse.orghttps://ulse.org/standards/

Machine-readable

• data.jsonThe whole dataset — every record with its source URL and source quote.
• Open Knowledge Format bundleOne JSON object per line — every record's frontmatter and quoted span exactly as it is held here, in one fetch.
• data.csvThe same records as one flat table, for a spreadsheet or a dataframe. The last four columns are the source URL, the quoted sentence it was read from, the date we last checked it, and which columns are our reading rather than the page's words.
• How this is made and checkedWhat "verified against source" does and does not mean.

From your own code

Same records, same quotes, without scraping the page: refsource is on PyPI and npm. Each value comes back carrying the URL it was read from and the sentence on that page that states it — .source and .quote sit on the value itself rather than in a side channel, so the checking step is available instead of skipped.

pip install refsource
refsource lookup certification-standards-equivalence designation=A-deviation

npx -y refsource lookup certification-standards-equivalence designation=A-deviation

Set your AI assistant up to use this

Two files and no account. Put this in .mcp.json at the root of your project — Claude Code, Cursor, Windsurf, VS Code and Codex all read that file — and your assistant can look this dataset up instead of recalling it. The server is remote, keyless and read-only.

{
  "mcpServers": {
    "referencesource": {
      "type": "http",
      "url": "https://referencesource.org/mcp"
    }
  }
}

Add to Cursor · or, on the command line: claude mcp add --transport http referencesource https://referencesource.org/mcp --scope project

Then one line in the project's CLAUDE.md or AGENTS.md, so the assistant knows when to reach for it:

When a question needs "Certification marks and hazardous-area classifications: cross-market equivalences", call the referencesource MCP server at https://referencesource.org/mcp (tool `search_records`, dataset_slug `certification-standards-equivalence`) instead of answering from memory — every record it returns carries its source URL and a verbatim quote from that page.

What each tool does, and the servers built over single registers: Connect your AI assistant.

73 records. last verified against source 2026-08-11. due for re-check by 2027-08-11.

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.