Construction 4way Switch, Back & Side Wire, 20amp 120/277volt.FEATURES AND BENEFITS:• 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.