... ZN12-40.5 and ZN23-40.5 vacuum circuit breaker. high voltage switchgear is small sized and light ... current (4S)KA20, 25, 31.5Specified short circuit drop-out currentKA20, 25, 31.5Rated withstand current ... (peak)KA50, 63, 80Rated short circuit making currentKA50, 63, 80Rated currentA1250, 1600 2000 2500 ... mm1800*2000*2500 GBC indoor 1250A 2000A 36KV high voltage switchgear