Marathon 15 HP Definite Purpose AC Motor, 3 phase, 1800 RPM, 208-230/460 V, 254TC Frame, ODP - U436

Catalog #:U436
Part #:254TTDX4065
  • Ball bearings, mechanically locked on shaft end (excludes 5K models)
  • NEMA Service Factors
  • UL Recognized and CSA Certified
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General Specifications

Weight: 185.00 LB Packaged Length: 26.88 IN
Packaged Width: 18.38 IN Packaged Height: 15 IN

Nameplate Specifications

Output HP: 15 Hp Output KW: 11.2 kW
Frequency: 60/50 Hz Voltage: 208-230/460 V
Current: 42.0-38.5/19.2 A Speed: 1760 rpm
Service Factor: 1.15 Phase: 3
Efficiency: 91 % Power Factor: 80.2
Duty: Continuous Insulation Class: B
Design Code: B KVA Code: G
Frame: 254TC Enclosure: Drip Proof
Thermal Protection: No Ambient Temperature: 40 °C
Drive End Bearing Size: 6309 Opp Drive End Bearing Size: 6208
UL: Recognized CSA: Y
CE: Y IP Code: 12

Technical Specifications

Electrical Type: Squirrel Cage Induction Run Starting Method: Part Wdg Start Low Volt Only & Wye Start Delta Run
Poles: 4 Rotation: Reversible
Resistance Main: .62 Ohms Mounting: Rigid Base
Motor Orientation: Horizontal Drive End Bearing: Ball
Opp Drive End Bearing: Ball Frame Material: Rolled Steel
Shaft Type: T Overall Length: 22.64 in
Frame Length: 15.15 in Shaft Diameter: 1.625 in
Shaft Extension: 3.75 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 19.20 100.0 44.50 100.0 1,760 15.00
Pull-Up 104.00 542.0 67.50 152.0 900 15.00
Locked-Rotor 116.00 604.0 100.00 225.0 0 43.0 15.00
2/3 99.00 516.0 78.50 176.0 1,200 15.00
1/3 110.00 573.0 63.50 143.0 600 15.00
No Load 8.00 42.0 0.00 0.0 1,800 15.00
Break-Down 67.00 349.0 120.00 270.0 1,680 70.0 15.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 %
Current (Amps) 8.00 9.00 11.50 15.00 19.20 21.50 23.50
Rated Output (KW) 0.40 3.00 6.00 9.00 12.50 14.00 15.50
Efficiency (%) 0.0 87.0 91.0 91.7 91.0 91.0 90.2
Power Factor (%) 6.0 44.0 65.5 75.5 80.2 81.5 82.0
Speed (RPM) 1,800 1,790 1,785 1,775 1,760 1,755 1,750
Temp. Rise @ FL 0.0 0.0 0.0 0.0 50.0 70.0 85.0
Torque (ft-lbs) 0.00 11.00 22.00 33.50 44.50 51.50 56.00
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