Marathon 300 HP Severe Duty Motor, 3 phase, 1800 RPM, 460 V, 449T Frame, TEFC - W632

Catalog #:W632
Part #:449THFS9027
  • Meets or exceeds NEMA Premium® efficiency. Model is in compliance with EISA2007
  • Meets IEEE-841 standard for severe duty applications
  • Constant Torque speed range is listed in CT SPEED RANGE column
  • Blue Chip® quality, 100% cast iron construction for rigidity and reduced vibration
  • Inpro/Seal® VBX® bearing isolators on drive end shaft extension TENV and on both ends of TEFC
  • Provisions to add stub shaft for an encoder (182T-449T, TEFC only)
  • Internal and external epoxy finish
  • MAX GUARD® Class F insulation system
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General Specifications

UPC: 722856022110 Weight: 0 LB
Packaged Length: 56 IN Packaged Width: 46 IN
Packaged Height: 32.05 IN

Nameplate Specifications

Output HP: 300 Hp Output KW: 224.0 kW
Frequency: 60 Hz Voltage: 460 V
Current: 339.0 A Speed: 1785 rpm
Service Factor: 1.15 Phase: 3
Efficiency: 96.5 % Power Factor: 86
Duty: Continuous Insulation Class: F
Design Code: B KVA Code: G
Frame: 447/449T Enclosure: Totally Enclosed Fan Cooled
Thermal Protection: No Ambient Temperature: 40 °C
Drive End Bearing Size: 6319 Opp Drive End Bearing Size: 6318
UL: Recognized CSA: Y
CE: Y IP Code: 56

Technical Specifications

Electrical Type: Squirrel Cage Inverter Rated Starting Method: Part Wdg Start & Wye Start Delta Run Or Inverter
Poles: 4 Rotation: Reversible
Resistance Main: .0085 Ohms Mounting: Rigid Base
Motor Orientation: Horizontal Drive End Bearing: Ball
Opp Drive End Bearing: Ball Frame Material: Cast Iron
Shaft Type: T Overall Length: 51.84 in
Frame Length: 28.75 in Shaft Diameter: 3.375 in
Shaft Extension: 8.81 in Assembly/Box Mounting: F1/F2 Capable

Speed Characteristics

Curvepoint Current (Amps) Current (%) Torque (ft-lbs) (%) Speed (RPM) Rated Output (KW) Power Factor (%) Rated Output (Hp)
Full Load 339.00 100.0 883.00 100.0 1,785 300.00
1/3 2,150.00 634.0 1,600.00 181.0 600 300.00
Break-Down 1,150.00 339.0 2,100.00 238.0 1,725 64.0 300.00
Pull-Up 2,050.00 605.0 1,650.00 187.0 900 300.00
No Load 98.00 29.0 0.00 0.0 1,800 300.00
2/3 1,950.00 575.0 1,850.00 210.0 1,200 300.00
Locked-Rotor 2,200.00 649.0 1,775.00 201.0 0 31.0 300.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 %
Current (Amps) 98.00 125.00 187.00 260.00 339.00 390.00 425.00
Rated Output (KW) 4.50 60.00 117.00 174.00 232.00 267.00 290.00
Efficiency (%) 0.0 93.0 95.4 96.5 96.5 96.2 95.8
Power Factor (%) 4.5 60.0 78.0 84.5 86.0 86.0 86.0
Speed (RPM) 1,800 1,796 1,792 1,788 1,785 1,782 1,778
Temp. Rise @ FL 0.0 45.0 40.0 0.0 75.0 105.0 0.0
Torque (ft-lbs) 0.00 219.00 439.00 660.00 883.00 1,015.00 1,105.00
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