ZN63(VS1)-12 indoor high-voltage vacuum circuit breaker

The ZN63(VS1)-12 indoor high-voltage vacuum circuit breaker is designed for three-phase AC 50Hz power systems rated at 12kV. It protects and controls grid equipment and power equipment in industrial and mining facilities. It is suitable for frequent operation at rated current or repeated interruption of short-circuit currents.

The breaker is designed in one form, using both a moving unit and a breaker unit, as a fixed installation unit, and a dedicated propulsion unit to form a handcar unit.

1. Ambient air temperature: upper limit +40°C, lower limit -15°C.

2. Altitude: ≤1000m. For higher altitudes, the rated insulation level must be increased accordingly.

3 amplitude: earthquake strength does not exceed 8 degrees.

4. Relative humidity: daily average ≤95%; monthly average ≤90%.

5. Sites free from fire, explosive hazards, serious pollution, chemical corrosion and severe vibration.