Commercial 1pole Switch, Side Wire, 20amp 120/277volts, •One-piece brass alloy contact arm for reliable electrical performance. , •One-piece steel strap with integral ground is plated for corrosion resistance. , •High strength thermoplastic polycarbonate toggle resists breaking and chipping under heavy abuse. , •Heavy-duty toggle bumpers for smooth and quiet operation. , •Back body made of glass-reinforced nylon. Locking support provides resistance to face and back body separation. , •Available with side wire or external screw-pressure-plate back and side wire models capable of accepting #14 - #10 AWG copper or copper-clad wire. , •Cam designed for fast make with positive break action to minimize arcing and prolong switch life. , •Oversized silver alloy contacts for longer dependable switch life. , •Tri-drive terminal and mounting screws.