这样就会接通电路，打开晶体管。
这样就会接通电路，打开晶体管。利用相反的电荷，电极就会复位，进而断开电路。
This closes the circuit and turns the transistor on. Apply the opposite charge and the electrode flips back, breaking the circuit.
联锁机构安装在断路器上，避免断路器在“接通” 位置上柜体小室门打开。
The interlock device is mounted on the circuit breaker to prevent the cubicle door from being opened when the circuit breaker is in the connected position.
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