They tell you: EU compliance (CE), the ATEX notified body (four-digit number), the specific Ex mark, the equipment group & category (e. Both CE marking and Ex marking indicate that equipment meets strict safety and conformity requirements. The CE marking confirms compliance with all applicable EU directives, while the Ex marking specifically shows that the product is suitable for use in potentially explosive atmospheres under the. When electrical equipment is used in a potentially hazardous location — one that contains flammable gases, vapors, liquids, dust, or fibers — it's important that the potential for fire or explosion be minimized. One way to do this is to use equipment that has been certified as suitable for that. ATEX/IECEx nameplates are compact passports. This reference helps engineers understand. Equipment certified as providing a method of protection for use in hazardous locations is required to display the following markings: The symbol Ex, (or EEx if constructed to the EN500 —standards) The type of protection used – 'd', 'e', 'n', etc The equipment group, IIA, IIB or IIC, and The. These certifications include an explosion-proof marking (Ex marking), which may look complex at first glance. What Is an Explosion-Proof Marking? The explosion-proof marking provides key information about.