Features 1、The products are combined type, the shell is made of glass-fiber and unsaturated polyester-resin, inner cir cuit breaker is our company’s special explosion-proof element, the shell is safety-increased structure, with the excellent functions of water-proof, dust-proof and impulsion withstanding, because the main components all use enginering plastic, it has the function of strong corrosion-proof. 2、 The product uses scientific optimized design, light and compact structure, but there is big space for the users to install and connect, maintain. 3、With the protection of overload, and short-circuit, it can add the protection offleakage according to the demand. 4、Suitable for steel pipe and cable wiring. 5、Suitable for GB3836-2000, IEC60079 standard request.