Marathon® AC Motor, 4-Pole Continuous/Inverter Duty Low Voltage, Close Coupled Motors Application, Squirrel Cage Inverter Rated Motors Special Features, 15 HP, 230/460 VAC, 37.5/18.8 A, 60 Hz Frequency, 3 ph ph, 1772 RPM Speed, 1 Speed, IP55 TEFC Enclosure, 254JP Frame, 1-1/4 in Dia x 8.37 in L Extension Shaft, Reversible Rotation, 1.15 Service Factor, Deep Groove Ball Bearing, 44.5 ft-lb Full Load Torque, Rigid Base Mounting, 40 °C, Insulation Class: Class F, Cast Iron, 10:1 Constant Torque Speed, 10:1 Variable Torque Speed, 29.02 in W x 17.38 in D x 15.14 in H Dimensions