Baldor-Reliance Motor, 20HP,1765RPM,3PH,60HZ,256T,3944M,OPSB,F2Features:Heavy duty framesBall bearingsMoisture resistant ISR® (Inverter Spike Resistant) copper windingsLow-loss electrical lamination grade steelThree year warranty.Typical Applications:Typical applications include operations where continuous or frequent duty is required. Super-E Motors are designed to conserve energy over extended time periods. Inverter rated per NEMA MG1 Part 31.4.4.2. Suitable for variable torque applications and 20:1 constant torque speed range with properly sized and adjusted variable frequency drives. Product Specifications HORSEPOWER20 ENCLOSUREOPSB FRAME256T MOUNTINGRigid NAMEPLATE RPM1765 PHASE3 MOTOR RPM 60Hz1765 VOLTAGE230/460 HERTZ60 SERVICE FACTOR1.15 AMBIENT TEMP C40 WEIGHT237 RPM RANGE1701-1800 DESIGN CODEB BEARING-DRIVE-END6309 BEARING-OPP-DRIVE-END6208 FL EFFICIENCY93 INSULATION CLASSF FL AMPS47/23.5 KVA-CODEH 208V AMPS49.4 BRANDBaldor-Reliance DOE-CODE010A MANUFACTURER PART #EFM2515T is_motorYes ENCLOSURE TYPEOpen/Drip Proof POWER-FACTOR86 DRIVE END FLANGEStandard C-DIMENSION INCHES21.69 SERIAL-NUMBER-- POLES4 SPEC. NUMBER39K070W915G1