Safety Switch, Compatible with Manufacturer Model Number RFK10, Contact Form 3PST, Current Rating 100 A, Depth 6 1/2 in, Duty Heavy Duty, Enclosure Type Enclosed, Environment Indoor, For Fuse Class Class H, Class J, Class K, Class R, Fuse Kit (Class R) Mfr. No. RFK10, Height 21 1/4 in, Horsepower @ 240V AC 75 hp, Horsepower @ 480V AC 60 hp, Horsepower @ 600V AC 100 hp, Housing Material Steel, IP Rating IP20, Mounting Style Surface Mount, NEMA Enclosure Rating 1, Neutral Assembly Included Yes