Which ATEX codes are distinguished?

Whether a lamp is ATEX certified or not can be seen on the lamp housing. The certification is printed in it. This consists of a number of codes. These codes and their meanings are listed below:


  • CE: This code confirms that the product complies with all EU quality requirements.
  • Ex: The specific sign for explosion prevention.
  • G, D or GD: Applicable in gas (G), dust (D) or both (GD) atmospheres.
  • E Ex: Approved for use in explosive areas in accordance with the latest common European requirements.
  • E ib: Level of protection.
  • IIA, IIB or IIC: The gas group to which the product belongs. (IIA has the lowest risk of ignition, IIC the highest).
  • T1 to T6: Temperature classification of the used light bulb. Classification according to the maximum temperature of the surface, with T1 being the highest and T6 the lowest.


An ATEX certification should be issued by a notified body such as KEMA or DEMKO. If the lamp is evaluated by a non-certified testing institute, the zone in which the certification is granted is maximum 2. This is the lowest protection class. For more information on ATEX, click here.

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