... . 12KV 3 phases Isolate Switch, Disconnector Switch specifications as followings:GN19-12(C) indoor disconnector switch is applied in power system ... time withstand current(4s)(KA)Rated peak withstand current(kA)GN19-12/400-12.51240012.531.5GN19-12/630-20126302050GN19-12 ...