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445TSTDS7303 – Marathon 250 HP Fire Pump Motor, 3 phase, 3600 RPM, 460 V, 445TS Frame, ODP – Y658

445TSTDS7303 – Marathon 250 HP Fire Pump Motor, 3 phase, 3600 RPM, 460 V, 445TS Frame, ODP – Y658

445TSTDS7303 Marathon Fire Pump Motors

  • UL File EX5190, CSA File LR2025 and CE Mark
  • 50˚C ambient, Ball bearings
  • 1.15 Service Factor (except as noted)
  • Red paint on 25 HP through 200 HP
  • NEMA Design B, Code G or less
  • Dual voltage motors have 12 leads, suitable for wye-delta or across the line start on either voltage, or part winding start on low voltage
  • Single voltage motors have 12 leads and are suitable for wye-delta, across the line, or part winding start
  • Will accept C-Face kits (except as noted), see Accessories section for kits
  • 230/460 and 460 Volt models rated for 50 HZ at next lower HP, 1.15 SF as noted

Marathon Motors
Regal Beloit

Description

445TSTDS7303 – Marathon 250 HP Fire Pump Motor, 3 phase, 3600 RPM, 460 V, 445TS Frame, ODP – Y658

445TSTDS7303 Marathon Fire Pump Motors

General Specifications

Packaged Length: 44.88 IN Packaged Width: 39.25 IN
Packaged Height: 29.56 IN

Nameplate Specifications

Output HP: 250 Hp Output KW: 187 kW
Frequency: 60/50 Hz Voltage: 460 V
Current: 275 A Speed: 3565 rpm
Service Factor: 1.15 Phase: 3
Efficiency: 93.6 % Power Factor: 90.5
Duty: CONTINUOUS Insulation Class: F
Design Code: B KVA Code: F
Frame: 445TS Enclosure: DP
Thermal Protection: NOT Ambient Temperature: 40 °C
Drive End Bearing Size: 6313 Opp Drive End Bearing Size: 6313
UL: No CSA: Y
CE: Y IP Code: 12

Technical Specifications

Electrical Type: SQ CAGE IND RUN Starting Method: PWS & YDRUN
Poles: 2 Rotation: REV
Resistance Main: 0.029 Ohms Mounting: RIGID
Motor Orientation: HORIZONTAL Drive End Bearing: BALL
Opp Drive End Bearing: BALL Frame Material: CAST IRON
Shaft Type: TS Overall Length: 36 in
Frame Length: 20.5 in Shaft Diameter: 2.38 in
Shaft Extension: 5 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)
Locked-Rotor 1,760.00 640.0 580.00 158.0 0 37.0 250.00
2/3 1,500.00 545.0 610.00 166.0 2,400 250.00
No Load 22.00 8.0 0.00 0.0 3,600 250.00
Full Load 275.00 100.0 368.00 100.0 3,565 250.00
1/3 1,675.00 609.0 495.00 135.0 1,200 250.00
Break-Down 1,020.00 371.0 920.00 250.0 3,400 68.0 250.00
Pull-Up 1,585.00 576.0 525.00 143.0 1,800 250.00

Load Characteristics

% of Rated Load 0 % 25 % 50 % 75 % 100 % 115 % 125 %
Current (Amps) 50.50 83.50 144.00 207.00 275.00 319.00 349.00
Rated Output (KW) 5.50 51.20 99.50 149.00 199.00 230.00 251.00
Efficiency (%) 0.0 91.0 93.6 94.1 93.6 93.0 93.0
Power Factor (%) 10.0 77.0 87.0 90.0 90.5 90.5 90.0
Speed (RPM) 3,600 3,590 3,582 3,572 3,565 3,555 3,550
Temp. Rise @ FL 0.0 0.0 0.0 0.0 60.0 80.0 100.0
Torque (ft-lbs) 0.00 102.00 183.00 276.00 368.00 425.00 462.00

Marathon Motors
Regal Beloit

Winter Weather Notice:

Our sales office and customer service teams may be disrupted on January 9th, 2025 due to a Severe Winter Weather advisory in their area. We apologize for any potential delays or disruptions this may pose to you and we appreciate your patience during this event.

 

In the meantime, please feel free to reach out to us for any quotes, questions, or concerns and we will do our best to respond in a timely manner – orders will still be processed normally.

Thanks!

Holiday Hours of Operation:

Our warehouses will be closed 12/24/2024-01/01/2025:

Our Sales Office will remain open with limited hours during this time and will continue to process orders – all shipments will resume on 01/02/2025 – feel free to purchase from our shop or contact us for quotes as usual.

*FYI: If you’ve placed an order with us before 12/24/2024, we are currently experiencing delays in manufacturing/shipping and are working hard to provide updates and complete fulfilment as quickly as possible – we thank you for your business and your patience*

Happy Holidays from IMEX!!!