Explosion Proof & Flame Proof

- Feb 01, 2021-

This protection method assumes that the surrounding explosive atmosphere can enter an enclosure intended to protect electrical equipment and that there will be internal explosions during the life of the protected equipment.

In order to be certified as explosion or flame proof, the enclosure must be strong enough not to fracture or distort under the internal pressures generated in order to contain explosions and prevent propagation. When testing a product for Explosion proof protection, it will have to undergo several actual explosions within simulated environments.

The chart below gives an overview of North American and International Explosion and Flame Proof protection standards:

Explosion and Flame Proof
CanadaEuropeUnited StatesInternational
CSA 60079-0EN 60079-0FM 3600IEC 60079-0
CSA 60079-1EN 60079-1FM 3615IEC 60079-1
C22.2 No. 30
UL 60079-0
CSA 137 (Lighting)
UL 60079-1


UL 1203


UL 844 (Lighting)

There are differences between Explosion Proof protection and Flame Proof protection that must be noted and will have an impact on your projects depending on where you intend to sell them. Generally, Explosion Proof is utilized in the US while Flame Proof is utilized in Canada and Europe.