Safety Switch, Fusible, For Use With Class H, K, R, T Fuse, General Duty, 100 A Amps AC, Voltage 240V AC, Three Phase, 15 hp @ 240V AC HP, 3R NEMA Enclosure Type, 20 IP Rating, Metallic / Non-Metallic Metallic, Material of Construction Steel, Number of Wires 4, Number of Poles 3, Contact Form 3PST, Height 23.15 in, Width 11.7 in, Depth 7.4 in, Standards UL, Fuse Kit (Class R) Mfr. No. HR63