Marathon Motors Metric Motor, E659, 256TTFNA6503, 20HP, 3600RPM, 575V, 3PH, 256T FR, TEFCMarathon's extensive line of 575 Volts, General Purpose motors are available in Open Drip-proof and TEFC construction in three phase. Horsepower sizes available from stock range from 1/2 HP through 100 HP. Product Specifications HORSEPOWER20 ENCLOSURETEFC FRAME256T MOUNTINGRigid NAMEPLATE RPM3600 PHASE3 MOTOR RPM 60Hz3600 VOLTAGE575 DUTYContinuous SERVICE FACTOR1.15 AMBIENT TEMP C40 WEIGHT368 ULRecognized Construction CSAY RPM RANGE3001-3600 MODEL NUMBER256TTFNA6503 60 HERTZ kW14.9 BEARING-DRIVE-END6309 BEARING-OPP-DRIVE-END6210 FL EFFICIENCY0.924 INSULATION CLASSF FL AMPS18.7 KVA-CODEG NEMA DESIGNB ASSEMBLYF1 (F2 Modification Available) APPROVAL-CEY DRIVE END BEARING SIZE6309 OPPOSITE END BEARING SIZE6210 STARTING TYPELine or Inverter BRANDMarathon Motors MANUFACTURER PART #E659 ORIENTATIONHorizontal is_motorYes IP CODE54 INVERTER SPEED RANGEDivision 2 T2B ENCLOSURE TYPETotally Enclosed