HL254-73, Carling Technologies, Heavy Duty AC rated Toggle Switch, 3 pole, screw terminals, On-None-On, bat actuator, unsealed, 10A @ 250VAC, 3/4HP @ 125-250VAC; 1, 2 or 3 phase The H-Series three pole toggle switches are heavy duty, high voltage AC rated switches. They feature a slow-make, slow-break contact mechanism, and fit the industry standard .500 diameter mounting hole. These switches are available in a wide range of momentary and maintained single throw or double throw circuits, terminations, and bushing/toggle configurations.