Pin and Sleeve Connector Body, Type Reverse Service, Compressor, Motor Generator Unit, Pump, Welder, 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, Minimum Cable Outer Diameter 1.875 Inch, Maximum Cable Outer Diameter 2.5 Inch, Material Epoxy Powder Coated Copper-Free Aluminum, Approval UL1682/1686/50E, CSA C22.2, Contact Material Copper, Enclosure NEMA 4X, Application Generator, ShippingDock,Port, Applicable Standard NEMA FB-11, Temperature Rating -40 to 107 Deg C