Wiring Device-Kellems HBL® Locking Toggle Switch, 2-Position 3-Way Extra Heavy Duty General Purpose Industrial Grade Non-Cylindrical, 120/277 VAC, 20 A, 5540 W, Double Ended Key/Toggle, Screw, Back/Side Wired Screw Terminal, 50000 Cycles Operating Cycles, Nylon Toggle/Thermoset Body, Black, Environmental Conditions: -40 to 75 deg C Temperature, 4.06 in H x 1.31 in W x 1.13 in D