Pin and Sleeve Receptacle, Type Polarized, Constructional Feature Weatherproof, Water Resistant, Voltage Rating 600 VAC at 50 to 400 Hz, 250 VDC, Current Rating 400 Ampere, Number of Poles 4, Number of Wires 3, Grounding Style 2, Shell, Extra Pole, Door Type Clamp Cover, Material Epoxy Powder Coated Copper-Free Aluminum, Grade Shipping, Approval UL1682/1686/50E, CSA C22.2, Wire Size 400 to 1000 MCM