3PST, action: on - off, actuator: metal, mtg. hole: 0.500", current rating: 17A @ 125V AC, 12A @ 250V AC, 1-1/2HP 250V AC 1, 2 or 3 phase, base material: phenolic, actuator & bushing material: brass/nickel plate, terminal type: screw (#6-32 NC-2 thread)