The function of the contactor, functionally speaking, is used to isolate and cut off or pull in the electrical circuit. In essence, the AC and DC contactors are the same in terms of contacts, but the coil ...
The trip unit is a device mechanically connected to the circuit breaker to release the holding mechanism and automatically disconnect the circuit breaker.
In order to protect our electricity safety, all kinds of devices that can disconnect the circuit have been produced. Among them, the Air Circuit Breaker and the leakage protector are well known, but we ca...
If you want to know why the plastic case circuit breaker cannot be opened, you first need to understand the following:
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