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.
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。
Ensure that the circuit-breaker is in the off position.
确认断路器处于分闸状态；
Application: Used to indicate the "on" or "Off" position of circuit breaker, the signals can be seen on the case or its front or on the operating stage.
应用：用于指示电路的通断状态，机壳或外壳的正面操作或操作台上可以见信号指示。
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