The motor- and control voltage is to be connected to a common network, where the sealing-in of the powercontactor is cancelled in case of an interruption of circuit.
电动机和控制电压应连接到一个公用网，从这里，当发生电流断路时，电力开关的触点被断开。
2
By linking the DC relay contactor with power electronic device, the DC hybrid switch apparatus without switching arcing was designed and accomplished.
采用直流开关电器与电力电子器件相结合方式，设计并实现了能够实现无弧通断的直流混合开关电器。
3
The solid state control operates a miniature contactor that will power up to 20 amps at 120 or 240 volts.