Marathon® AC Motor, 2-Pole Continuous-Duty, Compressor Motors, General Purpose AC Motors Application, Inverter Ready Special Features, 250 hp, 460 V AC, 275 A, 60 Hz Frequency, 3 ph, 3572 rpm Speed, 1 Speed, ODP Enclosure, 447TS Frame, 2.38 in Dia x 5.01 in L Shaft, Reversible Rotation, 1.15 Service Factor, Ball Bearing, 460 ft-lb Torque, Rigid Base Mounting, 40 deg C, Insulation Class: Class F, Cast Iron, 10:1 Constant Torque Speed, 10:1 Variable Torque Speed, 39.5 in L x 33.12 in W x 26.81 in H Dimensions