20 hp 3600 RPM, 54.0-47.0/23.6 amps 208-230/460 Volts 60 Hz Three Phase MotorNEMA 254T Rolled Steel Frame, Keyed Shaft 1 5/8" Diameter x 4"Service Factor: 1.15 Overload protection = NoneC-Face Mount, Ball Bearings, Class F Insulation, Reversible1 Year Manufacture WarrantyFor fire pump applications per NFPA 20 where contaminants are minimal. Wiring diagram on motor name plate. ODP = Open Drip Proof. AC86