VMD series of Indoor High Voltage Vacuum Circuit Breaker with embedded poles is three phase A.C.50Hz indoor power distribution equipment with the rated voltage of 7.2kV to 40.5kV.It's used for protecting and controlling the electrical equipment in the fields of industry&mining enterprise,power plants and substation.

The main conductive circuit of this type vacuum circuit breaker with spring mechanism is embedded pole,that can greatly improve the reliability of insulation,mechanical and breaking performance,and really realize the free-maintenance and longer mechanical&electrical life.

This type Vacuum Circuit Breaker conforms to national standards and the stipulations of IEC standard.