Safety Switch, Contact Form 3PST, Current Rating 100 A, Depth 6 1/2 in, Duty Standard, Enclosure Type Enclosed, Environment Indoor, For Fuse Class Class H, Class K, Class R, Fuse Kit (Class R) Mfr. No. RFK10, Height 17 1/2 in, Horsepower @ 240V AC 5 hp, Housing Material Steel, IP Rating IP20, Mounting Style Surface Mount, NEMA Enclosure Rating 1, Neutral Assembly Included Yes Suitable for use with service entrance equipment, this general-duty safety switch provides a 10kA short-circuit current rating when used with, or protected by, a Class H fuse. It has a 100kA short-circuit current rating when used with, or protected by, a Class R cartridge-type fuse (with a Class R fuse kit installed). Features include visible blades for positive identification that the switch is Off, a quick-make, qui.