Specifications: 1/2-1/6 hp 1800/1200 RPM, 2.4-2.8/1.5-1.7 amps 200-230 Volts 60hz. 3 phase Motor 2-Speed NEMA 56 Frame Keyed Shaft 5/8 Diameter x 1 7/8 Service Factor: 1.25, Overload protection = None Reversible, Resilient Base Mount, Ball Bearings, Class B Insulation