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