20 horsepower electric motor explosion proof hazardous location, 286T frame, 3 phase, 208-230/460 volt, 1179 rpm,NEMA Premium Efficient. Class 1, Division 1 Groups C&D, Class 2, Division 1 Groups F&G.Three Year warranty! Free Shipping!Motor Drawing & Nameplate InformationHP: 20RPM: 1179Frame: 286TVoltage: 208-230/460Amps: 52.0-47.0/23.5Efficiency: 91.7%Phase: 3SF: 1.15Shaft: 1 7/8" x 4 5/8"Enclosure: Explosion ProofWeight: 520 lbs