Application:  Ideal for the coal mine where methane and coal, dust may be present(Ex d) and dangerous explosion areas (Ex d II AT4, d II BT4) in the plant with the class IIA, IIB and temperature T1-T4 flammable gas. Features : All rating Class I, Class II A & II B and Group T4, Cast iron conduit-box with three or six terminals for rubber jacket cable and steel conduit entry. Ambient temperature : -15°C -35°C in coal mine and -15°C -40°C in plant