Pin and Sleeve Plug Interior, Type Plug, Constructional Feature Weatherproof, Raintight, Voltage Rating 600 VAC, 250 VDC, Current Rating 30 Ampere, Number of Poles 4, Number of Wires 4, Grounding Style 1, Shell, Material Epoxy Powder Coated Copper-Free Aluminum, Approval UL 1682/1686, Contact Material Brass, InsulationG+ç+¬Block Material FiberG+ç+¬GlassG+ç+¬ReinforcedG+ç+¬Phenolic, Application Compressor, Generator Unit, Pump, Shipping Docks, Shipping Ports, Welding