trip switch

剑桥词典

a safety switch that automatically stops electricity from flowing to a machine if a dangerously large current is created by the machine failing to operate as it should
跳闸开关，跳脱开关（一种安全开关，机器故障不能正常运行而产生较大危险电流时，它自动停止给机器供电） 返回 trip switch