Manufactory ZN73M-12 indoor high voltage vacuum circuit breaker

1.vacuum circuit breaker with IEC standard
2.Reliable and maintenance free
3.Long service life,non exploration

ZN73M-12 high voltage indoor vacuum circuit breaker is appropriate to 12kv, 50Hz three phase alternating current system, applicable for power grid breaking, loading current, overload current and circuit breaking current closing in transformer substation and power system of industrial and mining enterprises, especially for switching different nature of load and frequent operation. Permanent magnetic mechanism makes the component decreased 70% compared with spring mechanism. Vertical magnetic filed structure vacuum interrupter makes the operation more simple and reliable, breaking ability is good too. Sealed insulate cylinder makes better isolate characteristics. The life spam of magnetic mechanism reaches to 100,000 times and mechanical life 30,000 times, thus especially appropriate to frequent operation places. Fault alarm, antibounce shutting, adjustable charging voltage and optional overload, undervoltage protection function have all indicate it's intelligence.

This type of VCB can be divide into two types: handcart and fixed type. They can match to KYN28A ,XGN2,GG-IA switchgear also carry out non-oil reform.

Ambient condition

1 Ambient temperature: max +40°C min -15°C(conveyance under -30°C is allowed)

2 Altitude: ≤1000m

3 Relative humidity: daily average relative humidity: ≤95%; monthly average relative humidity≤90%; daily average saturated vapor pressure ≤2.2*10^-3 MPa; monthly average value  ≤1.8*10^-3 MPa

4 Earthquake intensity: ≤8 degree

5 The installation should be free from fire, explosion, severe vibration, chemical corrosion and serious pollution

Order instruction

Complete model and order quantity of the product

Rated current, rated voltage, distance of each poles

Rated short circuit breaking current, operation voltage

Required accessory and quantity

Other requirement please contact with us directly