ZN85B series indoor high-voltage vacuum circuit breakerDetailed product description：

The ZN85B circuit breaker adopts a structure of arc extinguishing chamber and operating mechanism arranged in front and behind. The operating mechanism adopts a spring operating mechanism of the same form as VS1, which is placed in the chassis in front of the vacuum arc extinguishing chamber. Its operating performance is more in line with the opening and closing performance of the arc extinguishing chamber, reducing unnecessary intermediate links and making the performance of the circuit breaker more reliable; Adopting an improved screw propulsion mechanism, it is labor-saving, stable, and has good self-locking performance

Main technical parameters of ZN85B series indoor high-voltage vacuum circuit breaker

Rated voltage: 40.5KV
Rated frequency: 50HZ
Rated current: 630A-2000A
Rated short-circuit breaking current: 20KA-31.5KA
The optimized VS1 spring operating mechanism is equipped with KYN61, KYN61B and other switch cabinets.