1-Pole Toggle Switch, Back & Side Wire, 20amp 120/277volt.FEATURES AND BENEFITS:• One-piece toggle molded from chemical-,impact-,and heat-resistant thermoplastic.• Impact- and chemical-resistant cover.• Glass-reinforced, chemical-resistant thermoplastic back body for durability, strength, and resistance to harsh cleaners.• One-piece nickel-plated brass strap for superior corrosion-resistance.• Auto-ground clip assures positive ground.• Cam control and spring actuator for positive "makes and breaks."• Heavy-duty bumpers for quiet, smooth operation.• Locking support provides resistance to face and back body separation.• Oversized silver-alloy contacts for long life and better heat dissipation.• Side and external screw-pressure-plate back wire with #14 - #10 AWG copper or copper-clad wire.• Heavy-duty, brass alloy, one-piece contact arm virtually eliminates contact bounce.• Grounding terminal is standard with screw-pressure plate back wire.• Shallow design for easier installation.