Full Technical Description: Polarized Type; High Impact Strength Natural Copper-Free Aluminum Material; 3 Wire(S); Industrial Grade; UL 1682/1686, CSA C22.2, CE Approval; 600 Volt AC at 50 to 400 Hertz, 250 Volt DC Voltage Rating; 100 Amp Current Rating; 4 Pole(S); Corrosion Resistant, Dirt Tight, Dust Tight, Water Tight, Moisture Resistant; Spring Door; 2, Shell, Extra Pole Grounding Style; ARKTITE[R] Brand; Overall Dimension 4-1/4 Inch Length X 4-1/4 Inch Width X 5-1/4 Inch Height; Screw Size 5/16 Inch-18 TPI; Enclosure Rating NEMA 4; Application Chemical Plant, Compressor, Conveyor, Heating and Cooling Unit, Lighting System, Manufacturing Plant, Meat Packing Plant, Motor Generator Set, Process Industry, Welder; AR Model