Catalog No - E659

256TTFNA6503
Features
  • Meets or exceeds NEMA Premium® efficiency. Model is in compliance with EISA2007
  • C-face addition may result in non-NEMA "BA" dim. For new "BA" dim consult chart found in modifcation section
  • Blue Chip® quality, 100% cast iron construction for rigidity and reduced vibration
  • Provisions to add stub shaft for an encoder (182T-449T, TEFC only)
  • Internal and external epoxy paint
  • MAX GUARD® Class F insulation system
  • Constant Torque speed range is listed in CT SPEED RANGE column
  • 1.15 Service Factor on sinewave, 1.0 Service Factor on IGBT power
  • Bearing caps (254T and larger), Precision balanced to .08”/sec
  • Meets IEEE45 USCG Marine Duty, IP54 Construction, Meets Ford EM1 Automotive Duty Specification
List Price: $3,037 USD

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General Specifications

Model : 256TTFNA6503 Catalog No : E659
Part Description : 20,3600,TEFC,256T,3/60/575 Category : Severe Duty
Stock : Yes
Nameplate Specifications

Technical Specifications

Electrical Type : Squirrel Cage Inverter Rated Starting Method : Line Or Inverter
Poles : 2 Rotation : Reversible
Mounting : Rigid Base Motor Orientation : Horizontal
Drive End Bearing : Ball Opp Drive End Bearing : Ball
Frame Material : Cast Iron Shaft Type : T
Overall Length : 25.40 in Frame Length : 12.25 in
Shaft Diameter : 1.625 in Shaft Extension : 4.2 in
Assembly/Box Mounting : F1/F2 Capable UPC : 722856020178
Weight : 368.00 LB
Speed Characteristics

Curvepoint Current (Amps) Current (%) Torque (ft-lbs) Torque (%) Speed (RPM) Rated Output (KW) Power Factor (%) Rated Output (Hp)
No Load 7.00 30.0 0.00 0.0 3,600 20.00
1/3 138.00 590.0 47.00 158.0 1,200 20.00
2/3 123.00 526.0 58.00 195.0 2,400 20.00
Pull-Up 131.00 560.0 50.00 168.0 1,800 20.00
Break-Down 100.00 427.0 84.00 283.0 3,155 67.0 20.00
Locked-Rotor 145.00 620.0 55.00 185.0 0 37.0 20.00
Full Load 23.00 98.0 29.70 100.0 3,535 20.00
Load Characteristics

  • % of Rated Load
  • Current (Amps)
  • Rated Output (KW)
  • Efficiency (%)
  • Power Factor (%)
  • Speed (RPM)
  • Temp. Rise @ FL
  • Torque (ft-lb)
  • 0 %
  • 5.60
  • 0.500
  • 0.0
  • 10.5
  • 3,600
  • 0.0
  • 0.00
  • 25 %
  • 7.20
  • 4.000
  • 87.5
  • 58.5
  • 3,585
  • 30.0
  • 7.50
  • 50 %
  • 10.40
  • 8.000
  • 91.0
  • 78.0
  • 3,570
  • 25.0
  • 15.00
  • 75 %
  • 14.40
  • 12.000
  • 91.7
  • 85.0
  • 3,555
  • 0.0
  • 22.00
  • 100 %
  • 18.72
  • 16.500
  • 92.4
  • 86.0
  • 3,537
  • 55.0
  • 29.70
  • 115 %
  • 20.80
  • 18.000
  • 91.7
  • 87.0
  • 3,525
  • 75.0
  • 31.00
  • 125 %
  • 23.60
  • 20.500
  • 90.2
  • 88.5
  • 3,515
  • 0.0
  • 37.50