The development of circuit breakers in China is very rapid. Many factories and families are using circuit breakers because they really have a sense of dependence. When the owner is not at home, they can protect the circuit well. Its working principle is relatively complex, involving various electrical knowledge. Although it looks simple, it actually contains many small parts, which constitute a huge function.

The circuit breaker is mainly composed of five parts: contact system, arc extinguishing system, operating mechanism, release and housing. Each part is its key part. The contact system is mainly connected with the circuit to monitor the change of voltage at any time. The extinguishing system is mainly used to immediately work to prevent accidents when there are abnormal conditions. It will immediately work to cut off the power supply to ensure the safety of the circuit and the safety of household appliances or factories.

In case of short circuit, the circuit breaker will generate large current, and the magnetic field generated by the large current will overcome the spring force. The release will pull the operating system to act, and then the switch will trip instantaneously to prepare for cutting off the power supply. The main working principle here is to generate elastic force through the large current, so that the release will start to work and cause the circuit breaker to work. The greater the current, the shorter the working time will be:

Some circuit breakers are electronic, the working object is the transformer, and then compared with the set value, when the current is abnormal, it will send a signal, and then cause the release to work. The arc extinguishing system is a key part of the circuit breaker. When the release sends a signal, the arc extinguishing system will start to work. The main task is to cut off the power supply, reduce thermal dissociation by cooling the arc, and then cut off the faulty circuit.

When the faulty circuit is cut off by the circuit breaker, the circuit will not be energized, thus preventing the expansion of the accident. Then there will be staff to deal with the faulty circuit, and the dangerous accident will be solved. For users, as long as they know the role of the circuit breaker, they can buy a circuit breaker that is safe at home, which is very guaranteed.