Atex ExII2G

IECEx is an international system for certification of equipment for use in explosive atmospheres. Its quality assessment specifications are based on standards prepared by the International Electrotechnical Commission (IEC).

The ATEX Directive covers equipment and protective systems intended for use in potentially explosive atmospheres. The Directive defines the essential health and safety requirements and conformity assessment procedures that must be applied before such products are placed on the EU market.

Manufacturers often certify products under both directives to avoid international certification and distribution issues.  Both IECEx and ATEX align with the same standards (e.g., IEC-EN 60079), so in terms of technical content, there is basically no difference.

Atex ExII2G

Ex symbol (according to ATEX directive)

Equipment Group
II = for all above-ground explosive environments

Equipment Category (Flammable Atmosphere)
2 = occassionally
3 = rarely, and for a short duraction
Category 2 devices may also be used in the areas that require category 3.

Corresponding Zones
2G = Zone 1 & 2
2D = Zone 21 & 22