General Purpose Motor, Three-Phase, Totally Enclosed Fan Cooled Motor Enclosure Design, 20 HP, Nameplate RPM 1,768, Frame 256T, Voltage 208-230/460V AC, 60 Hz Hz, Three Phase, Full Load Amps 53.0-48.5/24.2 A, Rigid Base Motor Mounting Type, Motor Thermal Protection None, Ins. Class F, Motor Service Factor 1.15, Ball Motor Bearings, Motor Frame Material Cast Iron, Max. Ambient Temp. 40 Degrees C, CW/CCW Motor Shaft Rotation, Nominal Efficiency 92.4 Percent, Continuous Duty, 1701-1800