What is Vacuum Circuit Breaker?

Vacuum Circuit Breaker is an indoor switchgear designed for power systems, which can be used as a protection and control unit in power grid equipment and industrial power applications. It plays an important role in handling various loads, frequent operations and repeated short-circuit breaking. 

The design of Vacuum Circuit Breaker integrates the vacuum interrupter with the main conductive circuit, protecting it from impact, dust and condensation, enhancing environmental adaptability and reducing operating and maintenance costs.

How does Vacuum Circuit Breaker work?

The construction of Vacuum Circuit Breaker involves several important vacuum circuit breaker components。First of all, the part of chassis trolley is equipped with sliding wheels, locking plates, grounding and auxiliary switches for mobile installation. Secondly, the operating mechanism includes motors, circuit boards, coils and springs, which control the circuit breaker to achieve opening and closing operations. In addition, the vacuum interrupter provides an insulating cylinder or a sealed pole. The contact arm is used to transmit current to the vacuum circuit breaker.