VS1 series vacuum circuit breaker is an indoor type high voltage equipment with rated voltage7.2~11KV,50HZ.It complies with GB/T 1984,JB3855 and related IEC standards.It can be frequently operated and has function of more times breaking capacity and fast reclosing.The circuit breaker is designed as front and backside structure,it can be used as fixed type and also can be used with withdraw truck.