Marathon Motors Premium Efficiency Motor, E2124, 20HP, 1800RPM, 208-230/460V, 3PH, 256T FR, TEFCMarathon's Premium Efficient Motors are designed meet the new Energy Efficiency standards. These Motors are available in both Totally Enclosed Fan Cooled and Open Drip Proof construction. Horsepower ranges from 1/3 - 400 Hp. Product Specifications HORSEPOWER20 ENCLOSURETEFC FRAME256T MOUNTINGRigid NAMEPLATE RPM1800 PHASE3 MOTOR RPM 60Hz1800 VOLTAGE208-230/460 DUTYContinuous SERVICE FACTOR1.15 AMBIENT TEMP C40 WEIGHT289 ULRecognized Construction CSAY RPM RANGE1701-1800 MODEL NUMBER256TTFL4026 BEARING-DRIVE-END6309 60 HERTZ kW14.9 BEARING-OPP-DRIVE-END6207 FL EFFICIENCY91 INSULATION CLASSF FL AMPS55-51/25.5 50 Hertz HP15 50 Hertz kW11.2 KVA-CODEG 50 HERTZ RPM1500 50 Hertz FL eFF91.00 Percent NEMA DESIGNB APPROVAL-CEY ASSEMBLYF1 (F2 Modification Available) DRIVE END BEARING SIZE6309 OPPOSITE END BEARING SIZE6207 STARTING TYPEAcross The Line 50 HERTZ VOLTAGE190/380 50 HERTZ FL AMPS46/23 BRANDMarathon Motors MANUFACTURER PART #E2124 50 Hertz SF1.15 ORIENTATIONHorizontal is_motorYes IP CODE43 ENCLOSURE TYPETotally Enclosed