UNILETS EDS Series 1-Gang 3-Way Tumbler Switch, Voltage Rating: 120 - 277 VAC, Amperage Rating: 20 AMP, Actuator: Front Operated, Enclosure: NEMA 7CD, 9EFG, Mounting: Surface Mount With 1/2 IN Dead-End Hub, HP Rating: 1 HP At 120 VAC, 2 HP At 240 VAC, Material: Malleable Iron Body, Nylon 6/6 Handle, Finish: Triple-Coat (Zinc Electroplate, Chromate And Epoxy Powder Coat), Height: 4.63 IN, Width: 3 IN, Depth: 4.69 IN, Standard: UL 894, UL 1203, E10523, E81751 UL Listed, Class I, Group B, As Well As Class I, Groups C And D, Class II, Groups E, F, G, And Class III, For Use In Classified Areas Where Ignitable Vapors, Gases Or Highly Combustible Dusts Are Present