开关contactor;solenoid switch详细»
开关disjunctor;paddle;switch;switching;toggle详细»
开关cock;contactor;drop shutter;faucet;onoff;startstop;switch详细»
开关breaker;circuit close;contact maker;current breaker;derail;disjunctor;drop shutter;make and break key;shifter;startstop;switch详细»
开关on-off;circuit closer;switch详细»
开关breaker;circuit closer;contactor;current breaker;on off;onoff;switch详细»