遮断者,阻碍者,断续器
Interrupter \In`ter*rupt"er\, n. 1. One who, or that which, interrupts. 2. (Elec.) A device for opening and closing an electrical circuit; a vibrating spring or tuning fork, arranged to make and break a circuit at rapidly recurring intervals, by the action of the current itself.
interrupter n : a device for automatically interrupting an electric current