Open Power Relay, Contact Form DPDT, Current Rating 40 A, Status Indicator No Indicator, Contact Rating (AC) 40 A @ 277V, Horsepower @ 120V AC 1/3 hp, Mounting Style Surface, Body Depth 3.12 in, Contact Material Silver Alloy, Dielectric Strength 1, 500 Vrms Between Contacts, 2, 200 Vrms Between Coil and Contact, 2, 200 Vrms Between Poles, Electrical Operating Durability 100, 000, Features Heavy Duty Base, Input Voltage 277V AC