... -33KV/35KV/40.5KV outdoor high-voltage vacuum circuit breaker is a kind of outdoor high-voltage switchgear under three-phase AC 50Hz ... ,1250,1600,20003Rated short-circuit breaking currentKA20,25,31.54Rated insulation levelPower frequency withstand voltageDryKV95WetKV80Lightning impulse withstand voltage (peak value)KV1855Rated operating ...