Commercial Specification Grade. Double-pole toggle. Switch mechanism is fully enclosed in a rugged urea housing providing outstanding strength, track and arc resistance. Consistently firm toggle action. Large silver-cadmium oxide contacts insure long life. Deep wire wells for back wiring and large head, deep-slotted terminal screws accept up to No. 10 copper wire. Shallow body, only 3/4 In. D. 30A/120/277V, 2 HP at 120/240V. Limited 10-year warranty. UL (Underwriter's Laboratories) listed, CSA (Canadian Standards Association) approved.