Open Power Relay, Coil Voltage 24V AC, Contact Form SPST-NO, Electrical Connection Screw Clamp, Number of Pins 4, Status Indicator No Indicator, Contact Rating (AC) 40 A @ 300V, Contact Rating (DC) 40 A @ 28V, Horsepower @ 120V AC 2 hp, Horsepower @ 240V AC 2 hp, Mounting Style Surface, Body Depth 2.5 in, Body Height 2.3 in, Body Width 2.5 in, Contact Material Silver Cadmium Oxide, For Use With Air Handling, Elevators, HVAC Equipment, Machine Tools