Interlocked Receptacle and Disconnect Switch, Type Interlocked, Constructional Feature Corrosion Resistant, Raintight, Watertight, Voltage Rating 600 VAC at 50/60 Hz, 250 VDC, Current Rating 30 Ampere, Number of Poles 4, Number of Wires 3, Door Type Removable Hinged, Padlockable Cover, Fuse Provision Fusible, Class R, Hub Type 1-1/2 Inch, Grounding Style 2, Shell, Extra Pole, Material Epoxy Powder Coated Copper-Free Aluminum (Receptacle), Enamel Coated Sheet Metal (Enclosure), Enclosure NEMA 3R/12, Wire Size 14 to 2 AWG, Power Rating 7.5 Hp at 600 VAC (Standard), 20 Hp at 600 VAC (Maximum), Excludes Viewing Window, Approval UL 98/50E/1682/1686, CSA C22.2, Application Welder, Generator, Compressor, Infrared Oven, Batch Feeder, Conveyor, Truck Terminal, Marine Dock, Industrial Plant