The Gardner Bender 20/10 amp Toggle Switch features an O-ring and has screw terminals for quick and easy connections. The switch offers single pole, single throw (SPST) on off circuitry in a classic bat handle design for easy usage. This switch is compatible with standard 1/2 inch mounting holes. Recommended Uses: automotive, vending machines, emergency lighting, industrial equipment, motor control, food service equipment Brass terminals Frame and support are steel with zinc chromate Case is black phenolic plastic All other external parts are brass/bright nickel On-Off, single pole, single throw, heavy-duty toggle switch and screw terminal 10 amp per 277 volt AC 20 amp per 125 volt AC 3/4 HP 125-250 volt AC