Enclosed Pre-Wired Relay, Coil Voltage 120V AC, Contact Form DPDT, Current Rating 20 A, Mounting Style Surface, Nipple Size 0.50 in NPT, Contact Rating (AC) 15 A @ 600V, 20 A @ 277 to 480/300V, Contact Rating (DC) 20 A @ 28V, Input Voltage 120V AC, NEMA Enclosure Rating 1, Body Depth 1.8 in, Body Height 1.8 in, Body Width 4 in, Contact Material Silver Alloy, For Use With Exhaust Fans, Motors, Vacuums, Frequency 50/60 Hz, Horsepower @ 120V AC 1 hp, Horsepower @ 240V AC 2 hp, Lead Length 16 in