Isolator switch Rated voltage: 22.9kv Rated current: 400A Basic level of insulation (kv peak): 125KV Dry arc distance: 253mm Isolator switch Rated voltage: 22.9kvRated current: 400ABasic level of insulation (BIL)(kv peak): 125KVDry arc distance: 253mmMeterial of insulator: Silicon rubber