Product Details  Explosion-proof transfer switch/circuit controller/sense switch It as power leading switch,to start,stop,change speed or revert  BHZ51-Series explosion-proof transfer switch/circuit controller/sense switch Applications 1. Hazardous:division 1&2; 2. Explosive gas atmosphere: class A, B, C; 3. Indoor or outdoor(IP54). Features 1. Enclosure is cast with aluminium alloy, surface is sprayed with plastic; 2. The product is suitable for to circuits of 220∼380V 10~63A as power leading switch, to start, stop, change speed or revert the motor; 3. Wiring with steel tube or cable.