The Circuit breaker

Circuit breaker is to point to to close, bearing and open circuit loop current under the condition of normal and can close, within the prescribed time and open circuit under the condition of abnormal loop current switch devices.Circuit breaker according to its use range was divided into high voltage circuit breaker with low voltage circuit breaker, high and low pressure boundary is fuzzy, divided into general called 3 kv high-voltage electrical appliances.

Circuit breaker can be used to allocate electricity, not frequent start asynchronous motor, the protection of power line and motor, when they happen serious overload or short circuit and under-voltage fault can automatically cut off the circuit, its function is equivalent to fuse switch to owe the combination of thermal relay, etc. And after the breaker fault current generally do not need to change parts. At present, has obtained the widespread application.

The generation of electricity, transportation, use, distribution is a very important link. Distribution systems including transformers, and various high and low voltage electrical equipment, low-voltage circuit breaker is a kind of use bedding face of electrical appliances.