Safety Switch Fusible For Use With Class H J K R T Fuse Heavy Duty 100 A Amps AC Voltage 600V AC Three Phase 75 hp @ 600V AC HP 3R NEMA Enclosure Type 20 IP Rating Metallic / Non-Metallic Metallic Material of Construction Galvannealed Steel Number of Wires 4 Number of Poles 3 Contact Form 3PST Height 23.1 in Width 12.0 in Depth 8.2 in Standards UL Listed Fuse Kit (Class R) Mfr No RFK10