trip switch

劍橋詞典

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
跳牐開關，跳脫開關（一種安全開關，機器故障不能正常運行而産生較大危險電流時，它自動停止給機器供電） 返回 trip switch