SENTRON 3KC ATC6300 LCD 144×144 mm Transfer control device for control of MCCB, ACB, LBS for load transfer between main and standby power supply Control panel instrument Un 100…240 V AC 50/60 Hz, 110…250 V DC Un 12…24 V DC Rated voltage Ue: 100…480 V AC 50/60 Hz screw terminal connection Expandable by maximum 2 additional modules