TOP explosion-proof incandescent Suitable for GB3836.1,2,3-2000 ,IEC60079 standard request. TOP explosion-proof incandescentApplication1.Used in Zone 1 and Zone ... 2 dangerous place and IIA,IIB groups explosive atmosphere.2.With incandescent lamp ,mercury lamp ... 220Rated power(W)250300175,250150,250175,250 TOP explosion-proof incandescent