20Amp 120/277V Commercial Specification Grade Switch.FEATURES AND BENEFITS: • RoHS Compliant • 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.