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Powered by Marathon’s century-long heritage of American engineering excellence, the Marathon U138 Close Coupled Pump Motors is built to deliver robust performance, high efficiency, and consistent torque across demanding industrial and commercial applications. With key specifications including 1 1/2 HP, 230/460 V, 1800 RPM, a durable 145JPV frame, and 4.4/2.2 Amps, this motor provides reliable, stable operation from the moment it is installed.
Constructed using premium materials and Class B insulation, the U138 features a rugged DP enclosure designed to withstand harsh environments, including high-moisture, dusty, and heavy-load conditions. Engineered for continuous Continuous duty, it delivers reduced thermal stress, lower vibration, and long-lasting durability, even in severe-duty or inverter-driven applications.
Designed for versatility, the Marathon U138 Close Coupled Pump Motors performs exceptionally well in pumps, compressors, HVAC systems, conveyors, material-handling equipment, agricultural machinery, and OEM industrial systems. Its Round configuration and broad NEMA/IEC compatibility make integration simple for both new installations and direct replacement scenarios.
Backed by Marathon’s reputation for durability, energy efficiency, and industry-proven reliability, this motor offers an excellent balance of performance and long service life. Electracore is your trusted Canadian supplier of genuine Marathon motors, providing expert technical guidance and fast nationwide delivery.
| Brand | Marathon |
|---|---|
| General Category | Pump > Close-Coupled Pump Motors |
| Product Category | Pump Motors |
| Sub Category | Close-Coupled Pump Motors |
| Horsepower | 1 1/2 |
| Voltage | 230/460 |
| RPM | 1800 |
| Amps | 4.4/2.2 |
| Frequency | 60 |
| Frame | 145JPV |
| Enclosure | DP |
| Rotation | Reversible |
| Mounting | Round |
| Max Ambient | 40°C |
| Phases | 3 |
| Assemblybox Mounting | W6 |
| Motor Orientation | Shaft Down |
| Motor Type | Squirrel Cage Induction Run |
| Number Of Poles | 4 |
| CSA Certified | Yes |
| CE Certified | Yes |
| Duty Cycle | Continuous |
| Efficiency | 84 |
| Insulation Class | B |
| IP Rating | 22 |
| KVA Code | M |
| NEMA Design | B |
| Starting Type | Across The Line |
| Overload Protector | No Protection |
| Power Rating In Kw | 1.1 |
| Speeds | 1 |
| Power Factor | 78.5 |
| Service Factor | 1.15 |
| Resistance Main | 10.83 |
| Speed2 | 1750 |
| De Bearing Size | 6206 |
| De Bearing Type | Ball |
| Ode Bearing Size | 6203 |
| Ode Bearing Type | Ball |
| Dim Unit | IN |
| Length | 19.88 |
| Width | 10.25 |
| Height | 8.12 |
| Shaft Diameter | 0.875 |
| Shaft Extension | 7.31 |
| Shaft Type | JP |
| C Dim | 17.98 |
| Frame Length | 8.56 |
| Frame Material | Rolled Steel |
| Weight Unit | LB |
| Weight | 41.00 |
| Url-3d Cad | https://ids.regalbeloit.com/CnxDocRequest/PublishedPDF/2017/documents/100231-856_RevH.zip |
| Url-datapack | https://cdnmedia.regalbeloit.com/images/d120001/medias/docus/4586/Article_145TTDR4037_DataPack_9.pdf |
| Connection Drawing No | A-EE7308 |
| Outline Drawing No | A-100231-856 |
| Ul | Recognized |
| Manufacturer | Regal Beloit |
| Part ID | 145TTDR4037 |
| UPC | 722856034779 |
| Supersedes | N/A |
| Features | NEMA JP pump shaft dimensions JPV frame includes drip cover for vertical mount without base JP frame has rigid base, drip cover not included Ball bearings, mechanically locked on shaft end Continuous duty 1.15 Service Factor UL Recognized and CSA Certified UL Listed for Fire Pump applications (except as noted) |
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Marathon Motors provides durable, energy-efficient electric motors designed for industrial and commercial applications, including pumps, HVAC systems, compressors, conveyors, and material-handling equipment. Built for long service life and dependable performance, Marathon’s NEMA and IEC motors are trusted worldwide. Electracore is your reliable Canadian supplier of authentic Marathon products with fast delivery and technical guidance.
Matched products based on similar HP, RPM, Frame, Voltage, and Enclosure type.
HP: 1 1/2, RPM: 1800, Frame: 145JPV, Voltage: 230, 460, Enclosure: DPFilter by exact spec for replacements.
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