Explosion Proof Electrical Motors Classification:

explosion proof
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The motor ambient temperature shall not exceed +40oC. Motors are approved for the classes:

  • CLASS I (Gases, Vapors)
    • Group A – Acetylene
    • Group B – Butadiene, ethylene oxide, hydrogen, propylene oxide
    • Group C – Acetaldehyde, cyclopropane, diethel ether, ethylene, isoprene
    • Group D – Acetone, acrylonitrite, ammonia, benzene, butane, ethylene dichloride, gasoline, hexane, methane, methanol, naphtha, propane, propylene, styrene, toluene, vinyl acetate, vinyl chloride, xylem
  • CLASS II (Combustible Dusts)
    • Group E – Aluminum, magnesium and other metal dusts with similar characteristics.
    • Group F – Carbon black, coke or coal dust
    • Group G – Flour, starch or grain dust
  • CLASS III (Fibers and flyings)
    • Group G – Flour, starch or grain dust