GP100 general purpose TEFC motors are available in two configurations which exceed NEMA Premium® efficiency with our exclusive, leading-edge, die cast copper rotor design (143T to 256T) or meet NEMA Premium® efficiency with our die cast aluminum rotor design (143T to 449T). Either way, these motors significantly reduce operating costs and pay for themselves in a short time through energy savings. These industry workhorses are ideal for use in material handling, pump, fan, compressor and other industrial applications. Siemens AC Motor, 4-Pole Continuous-Duty Low Voltage Standard Type GP100, Series: 1LE2, Compressor Motors, General Purpose AC Motors Application, Squirrel Cage Motors Special Features, 20 HP, 208 to 230/460 VAC, 25 A, 60 Hz Frequency, 3 ph ph, 1800 RPM Speed, TEFC/IP54/IP55 Enclosure, 256T Frame, 1-5/8 in Dia x 4 in L Shaft, Bi-Directional Rotation, 1.15 Service Factor, Ball Bearing, 60 lb-ft Torque, Footed/Floor Mounting, -20 to 40 °C, Insulation Class: Class F, Cast Iron, 4:1 Constant Torque Speed, 20:1 Variable Torque Speed, 26.16 in W x 12.75 in H Dimensions