International Electrotechnical Commission Explosive (IECEx) is an international system for certification to standards relating to equipment for use in explosive atmospheres.
The IECEx Scheme is an agreement among IECEx approved Certification Bodies, from several different countries, based on the use of international (IEC) standards and meant to facilitate the international trade of electrical equipment and services, intended for use in hazardous locations (explosive atmospheres), while maintaining the required level of safety.