Vacuum Circuit Breaker

VED-12 series indoor high voltage vacuum circuit breaker is suitable for 12kV air-insulated indoor
switchgear, used as protection and control unit of power equipment of industrial & mining enterprise. Due
to the super excellence, it is especially suitable for locations where requires the frequent operation under
rated working current or multiple breaking under short circuit breaking current. The circuit breaker adopts
the integrated design of operating mechanism and circuit breaker body, servers as not only fixed
installation, but also draw-out type equipped with a special propelling mechanism.
VED-12 has two main types. One is Draw-out type. Model No. is VED-12D. The other is Fixed type. Model
No. is VED-12F.

1Rated voltageKV12
2Rated frequencyHz50
3Rated lightning impulse withstand voltage (1 min)KV75
4Rated short-time power frequency withstand voltage (1 min)KV42
5Rated short-circuit breaking currentKA202521.540
6Rated currentA630  1000


630  1000

1250 1600

1250 1600 2000 25001600 2500 3150 4000
7Rated peak withstand currentKA506380100
8Rated shorted-time withstand current (4S)KA202531.540
9Power frequency withstand voltage of secondary circuit (1min)V2000
10Rated operation sequence



11Rated breaking current of (single/back to back)capacitor bankA630/400800/400
12Opening time(rated voltage)ms20~50
13Closing time(rated voltage)ms30~70
14Rated short-time current breaking timesTimes5030
15Mechanical lifeTimes30000
16Rated opening/closing voltageVAC110,220; DC110,220
17Rated voltage of energy-storage motorVAC110,220; DC110,220