The Eaton AH1222PL 20-Amp 120/277-volt industrial grade toggle switch with pilot light - back & side wire version glows in "on" position, lighted version glows when "off". industrial design cam action mechanism insures quiet switch action. Tapered lead-in slots on back wiring holes assist in gathering stranded wires for faster, more secure connections. Color-coded faces identify amperage: blue=15 Amp, red=20 Amp, green=30 Amp. Automatic Grounding system eliminates need for Bonding jumper in grounded metal enclosure. Back and side wire terminals accept up to no. 10 solid or stranded wire. Ground screw Terminal standard. 0.050 inch (12.7mm) thick steel mounting strap zinc-plated for corrosion resistance. 120/277V/AC rating ideal for fluorescent lighting fixtures typical in commercial applications. Combination slot/Phillips head mounting and Terminal screws ease installation with power screwdrivers (slot/Robertson screws in Canada where available).