ZN85-40.5kV Series Indoor Vacuum Circuit Breaker

Zipper closure 1/4 zip athletic pullovers for men. Stretchy, lightweight, fast-drying fabric for superior performance. REGULAR FIT - US standard sizes. An athletic fit that sits close to the body for a wide range of motion, designed for optimal performance and all day comfort. FEATURES - Quarter zip closure;Thumbholes on long sleeves to keep them in place during workout
project unit parameter
Rated voltage kV 40.5
1mina power frequency withstand voltage (effective value) kV 95
Lightning impulse withstand voltage (peak value) kV 185
Rated frequency Hz 50
Rated current A 1250 /1600 /2000
Rated short-time withstand current kA 25 / 31.5
Rated peak withstand current kA 63 / 80
Rated short-circuit duration s 4
Rated short circuit breaking time kA 25 / 31.5
Rated short-circuit making current kA 63 / 80
Rated operating sequence   0-0.3s-Co-180s-Co 
Breaking time ms <80
Rated short-circuit breaking current breaking times times 20
Single capacitor bank breaking current A 630
Back-to-back capacitor bank breaking current A 400
Rated operating voltage v -110/-110 -220/-220
Mechanical life times 10000



This circuit breaker is suitable for three-phase AC 50Hz, 40.5kv system. It can be used in industrial and mining enterprises, power plants and substations to switch load current, overload current, short circuit current, and is suitable for frequent operation occasions.


Product model and meaning

Shape and installation dimensions