Selection of energy-efficient AC contactor (similar CJ20SI type) products, and pay attention to AC contactor coil voltage remaining for the selected current device is connected to the corresponding terminals, pay attention to correct load matching. When selecting AC contactor stainless steel explosion-proof distribution box should be used in the insulation rating of A-level and above products, must ensure that its rated current of the main circuit contacts should be greater than or equal to the load current is controlled by the line. Contactor solenoid rated voltage of 380V or 220 V Protection class: According IEC60529-1989 standard provided by the equipment to prevent contact with live parts explosion grade distribution box 400 300 200, and the intrusion of foreign solid and liquid entry. See detailed classification IEC60529 standards. 5. Internal separate ways: according to IEC60529-1989 standards to protect the personal safety of explosion-proof box distribution box, the switchgear independent divided into several compartments of different ways. Technical parameters between different types of distribution cabinets have very different technical parameters and the basic import distribution cabinets are better than domestic distribution cabinet, but it does not consider the import and distribution cabinet to be good than domestic distribution cabinet . Explosion distribution box 400 300 200 | Xiqing proof distribution box | Koretoyo provided by Zhejiang Koretoyo explosion-proof electrical Ltd. Tianjin Office. Zhejiang Koretoyo explosion-proof electrical Ltd. Tianjin Office (#) strong, credible, in Tianjin's proof lighting industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving Koretoyo innovative ideas will lead into the brilliant explosion and you work for a better future!