Three movable contacts, actuated simultaneously by an insulated rod, open and close the circuit.

由一根绝缘杆同时开动的三个移动触点断开和连接电路。

youdao

Three movable contacts, actuated simultaneously by an insulated rod, open and close the circuit.

由一根绝缘杆同时开动的三个移动触点断开和连接电路。

youdao