Safety Switch Fusible For Use With Class H J K R T Fuse Heavy Duty 200 Amps AC Voltage 600VAC 3 Phase 150 HP @ 600VAC HP 3R NEMA Enclosure Type 20 IP Rating Metallic / Non-Metallic Metallic Material of Construction Galvannealed Steel Number of Wires 3 Number of Poles 3 Contact Form 3PST Height 31.1 In. Width 17.0 In. Depth 10.1 In. Standards UL Listed Fuse Kit (Class R) Mfr No HRK1020