Vacuum Circuit Breaker - 12kv Rated Voltage, 1250-3150a Current | Indoor High-voltage Distribution Device For Frequent Operations

Our range of ZN63-12(VS1) series of Vacuum Circuit Breaker is three-phase A.C. 50Hz indoor high-voltage distribution device with 12KV rated voltage and below which can match with GZS1 type cubical switchgear. It is suitable to control and protect transmission and distribution system such as power generation plant and substation, especially used in the fields where it is frequently operated.The operating mechanism of this series of circuit breaker is that of spring energy-stored type which can be operated by A.C. or D.C., also by manual control.

Applying ambient conditions:
1. The elevation should be no higher than 1000m.
2. Ambient temperature: The max. temperature should be +40C. The min. temperature should be -10C.
3. Relative Humidity: The average humidity of a day should be no more than 95%. The average humidity of a month should be no more than 90%.
4. Saturated Vapour pressure:The average saturated vapour prereure of a day should be no more than 2.2A 10-3 Mpa; The average saturated vapour pressure of a day should be no more than 1.8A 10-3 MMpa.
5. It should be used in the places without fire, explosion, serious filth, chemical erosion and violent vibration.

Specification Sheet:
Name Unit Data
Rated Voltage kV 12
Rated current A 1250 1600 2000 2500 3150
Rated power-frequency withstand voltage kV 42
Rated lighting impulse withstand voltage kV 75
Rated short-circuit breaking current kA 20 25 31.5 40