The auxiliary switch and alarm switch are internal accessories used to display the current status of the circuit breaker. The difference between the auxiliary switch and the alarm switch is that:
the auxiliary switch changes the state when the circuit breaker is opened and closed, and can display the on and off state of the circuit breaker, but it cannot distinguish whether the circuit breaker is a fault trip. Therefore, the auxiliary switch is mainly used to display the opening and closing state of the circuit breaker, and control or interlock other related electrical appliances through the opening and closing of the circuit breaker, for example, to signal lamps Output signals such as relays and logic circuits. The alarm switch is used to change the state when the circuit breaker is disconnected due to fault, and can display the fault tripping state of the circuit breaker. The alarm switch is mainly used to display the state when the circuit breaker is disconnected due to fault. When the load of the circuit breaker fails, it can timely control or interlock other related electrical appliances, such as outputting signals to the alarm device, signal lamp, relay and logic circuit outside the circuit breaker. In a word, whether it is an auxiliary switch or an alarm switch, it can only detect the status of the main contact of the circuit breaker, but cannot change its status< br>