Full Technical Description: Circuit Breaking, Compressor, Conveyor, Motor Generator Set, Polarized, Welder Type; Natural Finished Copper Free Aluminum Material; 2.5 Inch min. Cable Outer Diameter; 3 Inch Max. Cable Outer Diameter; 3 Wire(S); UL 1682/1686, CSA C22.2, CE Approval; 600 VAC at 50 to 400 Hz, 250 VDC Voltage Rating; 400 Ampere Current Rating; 4 Pole(S); Corrosion Resistant, Dirttight, Dusttight, Moisture Resistant, Weatherproof; 2, Shell, Extra Pole Grounding Style; ARKTITE[R] Brand; Size 20-1/4 Inch L; Application Chemical Plant, Compressor, Conveyor, Heating and Cooling Unit, Lighting System, Manufacturing Plant, Meat Packing Plant, Motor Generator Set, Process Industry, Welder; APR Model