Ex q / qb / qc
For Ex q / qb / qc, meaning is Quartz/Sand Filled; governing standard / law is EN/IEC 60079-5, verified against its source on 2026-08-11.
- Designation
- Ex q / qb / qc verified
- Meaning
- Quartz/Sand Filled verified
- Governing standard / law
- EN/IEC 60079-5 verified
What the source says
Quartz/Sand Filled - Ex q / qb / qc EN/IEC 60079-5
— euroswitch.com, retrieved 2026-08-11
Source
- euroswitch.comhttps://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf