·VSI (ZN63)-12 internal fixed type high voltage AC vacuum circuit breaker (hereinafter referred to as circuit breaker) is a three-phase AC 50Hz, rated voltage 12kV indoor switchgear, for industrial and mining enterprises, power plants and substations for electrical facilities For control and protection, and for locations where frequency is tight.
·The circuit breaker is designed in one piece with the operating mechanism and the circuit breaker body, and is installed in various fixed switch cabinets.
·Standards compliant
The circuit breaker complies with GB1984 "AC High Voltage Circuit Breaker", JB3855-1996 (3.6-40.5kV WAN AC High Voltage Vacuum Circuit Breaker)
DJ403-91 "10-35kV Wannian AC High Voltage Circuit Breaker Ordering Technical Conditions"
The standard requirements are in accordance with the relevant requirements of IEC56 (87 publications).