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Circuit Breaker (mechanical)
- Aug 18, 2017 -

Circuit Breaker is a switch device which can close, load and break the current in normal loop condition and can be closed, and the current under the condition of the abnormal circuit is loaded and broken in the specified time. Circuit breaker according to its scope of use is divided into high-voltage circuit breakers and low-voltage circuit breakers, high and low pressure line division is relatively vague, generally more than 3kV called high-voltage electrical appliances.

Circuit breaker can be used to allocate electric energy, do not start asynchronous motors frequently, power lines and motors, such as protection, when they occur serious overload or short-circuit and undervoltage failure can automatically cut off the circuit, its function is equivalent to the fuse switch and the combination of thermal relays and so on. And after breaking the fault current generally does not need to change the spare part. At present, it has been widely used.

Power distribution is an extremely important link in the generation, transmission and use of electricity. Distribution system including transformers and a variety of high-low-voltage electrical equipment, low-voltage circuit breaker is a large-scale use of electrical appliances.