Glossary
Standards and regulations
IECEx
Also known as IECEx certification, IEC Ex scheme.
IECEx is the globally-recognised certification scheme operated by the International Electrotechnical Commission (IEC) for equipment used in explosive atmospheres. IECEx certifications are accepted in most jurisdictions worldwide — Australia, Brazil, India, China, South-East Asia, the Middle East, Russia and many more.
Relationship to ATEX
IECEx and ATEX share the same underlying technical standard (IEC 60079 series). The differences are administrative — ATEX is the EU regulatory implementation; IECEx is the international voluntary certification scheme. Industrial sonic horns sold globally typically carry both ATEX and IECEx certifications to satisfy buyers in any region.
Practical implications
- EU customers expect ATEX; many also accept IECEx
- Asian, Middle Eastern and most other non-US customers accept IECEx
- US customers expect NEC Class I Div certification (a different framework)
Related terms
Related terms
- ATEX directiveThe ATEX directive sets EU requirements for equipment used in explosive atmospheres. Categorises zones 0/1/2 (gas) and 20/21/22 (dust); industrial sonic horns are routinely certified for Zone 20/21/22 dust service.
- IEC 60079IEC 60079 is the IEC's standard series for equipment used in explosive atmospheres. The technical foundation for both ATEX and IECEx certifications.
- Class I Div 1 and Div 2NEC Class I Div 1 and Div 2 are the US National Electrical Code's hazardous-area classifications for equipment exposed to flammable gases or vapours.