ZW8-12G/630-20 Outdoor use,pole mounted dry type vacuum circuit breaker

Application
As outdoor AC high voltage switchgear of three-phase 50HZ,the ZW8-12series outdoor AC high voltage vacuum circuit-breaker mainly serves in the urban and rural power network of 10kV to make andf break load current,coverload current and short-circuit and in the similar occasions as well.
Main technical parameter

Rated voltage 12KV
Rated current 630A
Rated insulation level 1 min power frequency withstand voltage 45KV
lightning impulse withstand voltge (peak value) 75KV
Rated short- circuit breaking current 12.5KA,16KA,20KA
Rated short-ciruit making current(peak value) 31.5KA,40KA,50KA
Rated peak withstand current 31.5KA,40KA,50KA
Rated short-time withstand current(4s) 12.5KA,16KA,20KA
Machanical endurance 10000 times