ZN85-40.5 handcart type indoor vacuum circuit breaker is the first choice for safety

额定电压：

40.5KV

额定电流：

630A

额定频率：

50HZ

Overview:
The circuit breaker adopts an integrated and modular design. The overall structure is simple and reasonable. It is arranged up and down, with the arc extinguishing chamber part on the top and the interlocking and operating mechanism on the bottom. The dedicated spring operating mechanism requires no adjustment and the action is stable and reliable. The vacuum arc extinguishing chamber is arranged in a closed insulating cylinder, which improves the insulation performance and reduces the overall size.
Usage environment
Altitude: no more than meters
Ambient temperature: the upper limit is +℃, the lower limit is +℃
Relative humidity: the daily average value is not greater than %, and the monthly average value is not more than %. Greater than %
Seismic intensity: no more than excessive
There is no risk of fire or explosion, no severe vibration, chemical corrosion and other seriously polluted places.
When the above environmental conditions are exceeded, the user is required to negotiate with the manufacturer.
Structural features
The circuit breaker adopts integrated and modular design. The overall structure is simple and reasonable. It is arranged up and down, with the arc extinguishing chamber part on the top and the interlocking and operating parts on the bottom. Using a special spring operating mechanism, no adjustment is required, and the action is stable and reliable.
The vacuum arc extinguishing chamber of the three-phase conductive circuit is arranged in a closed insulating cylinder. The insulating cylinder is made of epoxy resin material with reliable electromechanical properties and mature vacuum casting technology. This not only significantly improves the same insulation performance, but also protects each phase circuit from the harsh external environment, prevents dust and foreign matter from entering the main circuit part, and reduces the overall size of the circuit breaker.
The circuit breaker adopts the vacuum arc extinguishing chamber produced by R Company in the United States or the latest domestically designed coil-type longitudinal and strong magnetic field structure vacuum arc extinguishing chamber. It adopts ceramic shell and copper-chromium contact material. It has small size, high insulation level, strong arc extinguishing ability, long electrical life and excellent performance of breaking and closing short-circuit current.