Explosion proof switches are used wherever the ambient conditions are such that the presence of inflammable substances, oxygen and a source of ignition are to be anticipated simultaneously. The primary applications are to be found in the chemical and petro-chemical industries as well as paint lines. Protection against explosions is often also necessary where a large collection of line powder can develop such that a movement of air can lead to a spontaneous detonation. Examples include mills, wood processing and food processing industry.
