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Marathon U1131

model# 445TSTDCD4036
250 horsepower 1800RPM 447TS frame drip proof 3 phase 575 volt 60 hertz electric motor

Marathon U1131 445TSTDCD4036 250HP 1800RPM 447TS frame drip proof 3 phase 575 volt 60 hertz electric motor
  • Typically ships in: 1 day
  • Contact supplier for technical support on: 715-675-8090

$10,120.13 Each


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Return policy

Item must be unused.

Item must be in it's original package.

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Dear Customer by submitting this form You will be requesting the product specifications sheet for Marathon Electric U1131. Our customer service team will contact the manufacturer and send You the requested information by email.



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Additional Description

Regal Beloit Marathon U1131

UPC: 722856068163 | UNSPSC: 26101112 | GTIN:
Electric Motors > AC Motors

Marathon® AC Motor, 4-Pole Continuous-Duty Low Voltage, Fire Pump Motors Application, Squirrel Cage Induction Run Motors Special Features, 250 hp, 575 VAC, 222 A, 60 Hz Frequency, 3 ph ph, 1788 rpm Speed, 1 Speed, IP23 DP Enclosure, 447TS Frame, 2-3/8 in Dia x 4-3/4 in L Extension Shaft, Reversible Rotation, 1.15 Service Factor, Deep Groove Ball Bearing, 736 ft-lb Full Load Torque, Rigid Base Mounting, 50 deg C, Insulation Class: Class F, Cast Iron, 45.95 in L x 26.9 in H Dimensions


  • Designed for use on pumps for fire pump duty
  • Red paint on 25 hp through 200 hp
  • Single voltage motors have 12 leads and are suitable for wye-delta, across the line, or part winding start
  • 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


  • Service Factor: 1.15
  • Special Features: Squirrel Cage Induction Run Motors
  • Application Type: Fire Pump Motors
  • Insulation Class: Class F
  • Shaft Size: 2-3/8 in Dia x 4-3/4 in L Extension
  • Torque Rating: 736 ft-lb Full Load
  • Phase: 3 ph
  • Horsepower: 250 hp
  • Number of Speeds: 1
  • Rotation: Reversible
  • Frame: 447TS
  • Bearing Type: Deep Groove Ball
  • Temperature Rating: 50 deg C
  • Enclosure Type: IP23 DP
  • Speed: 1788 rpm
  • Frequency Rating: 60 Hz
  • Mounting Type: Rigid Base
  • Amperage Rating: 222 A
  • Voltage Rating: 575 VAC
  • Dimensions: 45.95 in L x 26.9 in H
  • Material: Cast Iron
  • Type: 4-Pole Continuous-Duty Low Voltage


  • Length: 50.67 in
  • Width: 38.94 in
  • Height: 35.95 in


CE Certified | CSA file LR2025 | UL file EX5190 | NEMA Design Code: B


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