Enclosed Circuit Breaker, Type Bolted Enclosure, Constructional Feature Explosionproof, Breaker Type FD, Trip Type Non-Interchangeable, Voltage Rating 480 VAC, 125/250 VDC, Current Rating 150 Ampere, Interrupting Rating 35 Kiloampere at 480 VAC, Number of Poles 3, Hub Size 2-1/2 Inch, Enclosure Class I Div 1 and 2 Group B C D, Class I Zone 1 and 2 Group IIA IIB, Class II Div 1 and 2 Group E F G, Class III, NEMA 4/4X/7BCD/9EFG, Enclosure Material Sand Cast Copper Free Aluminum, Enclosure Finish Grey Epoxy Powder Coated, Shaft/Handle Material Stainless Steel, Approval UL, CSA, Inner Size 11.38 Inch W x 6.38 Inch D x 20 Inch H, Overall Size 16.38 Inch W x 11 Inch D x 24.625 Inch H, Cover Bolt and Hinge Material Stainless Steel, Weight 104 Lb