The Super Auto Eject is a completely sealed automatic power line disconnect. This prevents contamination of the mechanism by road dirt, and ensures long reliable life even when mounted in the most severe environment. A novel internal switch arrangement closes and opens the 120 Volt A.C. circuit after the mating connector is inserted, and before the connector is removed. This eliminates arcing at the connector contacts, and assures long contact life. As with all Auto Ejects, the Super Auto Eject is connected to the starter circuit, so that ejection occurs when the engine is cranked. The back wire configuration is especially useful in places where space is limited on the sides of the unit.