Explosionproof motor Suitable for all sizes of shutters, the motor is 3 phases with controlled descent dependent on the size of the door. As standard, each shutter will include an open/stop/close push button station mounted. Suitable install at explosion-proof areas like explosion gas mixture IIA, IIB level, T1 – T4 Groups area like Cola Mine, Petroleum factory, Chemical industry. Ambient temperature -20 to 40-degree celsius. Atmospheric pressure 0.086–0.106Mpa. Relative air temperature is not greater than 85% (25degree Celsius). Motor housing protection class IP44.