HD11B, HD12B, HD13B, HD13X, HD14B, HS13B, HS13BX series switches apply to the rated voltage for the exchange of 50Hz, 380V, DC 220V, agreed to the current heat of the circuit 1600A, in the industrial enterprises in power distribution equipment for power isolation Purposes, with the interrupter in the conditions provided under the connection can be used to exchange or breaking the circuit.