ZN63A (VS1)-12 series of indoor vacuum circuit breakers (VCB) are used for 12kV rated voltage and three-phase AC 50Hz. The Products meet standards of GB1984-89 AC High Voltage Circuit Breakers, JB3855-1996 3.6~40.5kV Indoor AC Voltage Vacuum Circuit Breakers, DL403-2000 2kV~40.5kV Voltage Vacuum Circuit Breakers Specifications and IEC56.694 etc.

The product is designed by CAD software and adopte dynamic simulation analysis, which help the product run in stated and excellent way under any conditions. It can control and protect power distribution when the power distribution system running regular condition or fault condition (especially in the short circuit condition).