The AC SMARTStart® high reliability power distribution unit series is a rugged AC switched pdu suitable for a number of tactical operations and applications. This unit is designed to meet MIL-STD requirements including shock, vibration, and wide temperature operating range. The AC SMARTStart® power distribution unit provides 120 VAC or 220 VAC power to 8 or 16 AC loads while monitoring input line voltage and total load current. The user is able to define power up sequence order and time delay between individual mission devices at start up. Additionally, and most importantly, the user is able to lockout receptacles that are not needed and prevent unauthorized loads from being added that may inadvertently exceed the permitted load of the PDU.