1)name:porcelain connectors ,connectors,wires connectors 2)material:porcelian 3)fittings:copper,iron porcelain connectors ,connectors,wires connectorsProduct nameconnectorsElectric pressure220V 380V 500VEelectric current30AMain materialceramicsMetal accessoriescopper, and iron inlaid copperPriceDepend on your order electricityUse wayConnect with the pcb