1. For the dangerous sites with explosive air mixture: 1 division、2 division； 2. Flammable gas, steam class：ⅡA、ⅡB、ⅡC； 3. Temperatures classification：T1~T6； 4. Indoor and outdoor(IP54)。
1. 鑄鋁合金壓鑄外殼，表面噴塑； 2. 內裝隔爆型微動開關，結構緊湊，可靠性強，體積小， 通斷能力和壽命高； 3. 電纜布線。 1. Diecasted Al-alloy shell with plastic-sprayed surface; 2. Inside mounted flame-proofing switch with tight struture, good reliable and small bulk has strong capacity for cutting out and in, and the long service life; 3. Cable wiring.
