Marathon Single Phase Motors

Marathon Electric is a renowned name in motor engineering. With over a century of innovation and own production under Regal Rexnord, Marathon provides reliable single phase motors for general‑purpose and HVAC applications.

🔍 Product Range & Specs

Marathon Single Phase Motors Available

Square One stocks nearly 800 Marathon Single Phase Motors—comprehensive range covering:

• Horsepower: from ¼ HP to 10 HP

• Frame sizes: 48, 56, 143/145, 182/184, 213/215

• Speeds: 600–900 RPM, 901–1200, 1201–1800, and 1801–3600 

• Voltages: 115 V, 115/208‑230 V, 208‑230 V, with a handful at higher ranges

Enclosures & Designs

• Open Drip Proof (ODP) for clean indoor settings: heating, pumps, fans

• Totally Enclosed Fan Cooled (TEFC) for dusty, damp or industrial environments, protecting internal components

Most units are capacitator‑start induction‑run design, delivering high starting torque and continuous operation—standard across Marathon single‑phase motors

🧰 Use Cases & Applications

Marathon Single Phase Motors meet demands across numerous industrial and commercial settings:

• HVAC, fan, condenser applications: with hundreds of variants suited to blower, condenser or fan operation

• Pump motors: pool & spa pumps, pressure washers, water circulation

• Agricultural & farm machinery, woodworking tools, gate/door reversing motors

• Explosion‑proof applications available in select models

• Oil furnace blowers, pedestal fans, sump pumps, carbonator pumps, and general‑purpose equipment

Strong starting torque makes these motors ideal for heavy loads, compressors, and pump starts.

⚡ Technical Highlights

Efficiency, Power & Torque

Take model 056C17F2051 as an example:

• 0.50 HP (0.37 kW), 1800 RPM, 115/208‑230 V

• Efficiency ≈ 66 %, ball bearings, service factor 1.15, thermal protection, IP43 TEFC enclosure

Marathon motors typically offer Class B insulation, continuous duty operation, and design code M. Torque curves show strong pull‑up torque and breakdown performance at start.

Self‑Starting Considerations

Marathon single‑phase motors are capacitor‑start induction‑run; unlike shaded‑pole motors which have weak torque, these start reliably under load. Some small permanent‑magnet motors may self‑start, but Marathon’s design avoids that variability 

🏆 Why Choose Marathon Single Phase Motors

Reliability & Brand Reputation

• Marathon Electric is under Regal Rexnord, one of the largest motor manufacturers globally, and known for engineering excellence and consistent quality
  

Range & Availability

• Square One’s selection includes hundreds of frame speeds, horsepower options, voltage configurations and enclosures—helping customers find a precise replacement or upgrade quickly.

Support & Cross‑Reference

Marathon offers a comprehensive product cross‑reference tool. Easily match discontinued or OEM part numbers with current equivalents for quick replacement

💡 Choosing the Right Motor – How to Decide

For example: A 1 HP 1800 RPM 56-frame TEFC motor (like Marathon G574/G575) is ideal for HVAC or heavier pumps, whereas a smaller ¼–½ HP TEFC or ODP model (like 056C17F2051) works well for light industrial or general-purpose use.

🛒 Next Steps

• Browse Marathon Single Phase Motors — view full catalog on this page

• Request a Quote — for volume orders or hard‑to‑find discontinued parts

• Need help selecting? Contact our Square One experts! We are happy to assist you in finding the correct motor or a replacement. Reach out online, in-person, or call us at 302.678.0400

🔧 FAQs

Q: What is the difference between TEFC and ODP motors?
A: TEFC motors are totally enclosed to resist dust and moisture—ideal for harsh environments. ODP motors are ventilated and suited to clean, dry indoor settings.

Q: Can Marathon Single Phase Motors self‑start under load?
A: Yes—Marathon motors use capacitor‑start induction‑run design, which provides robust starting torque—even under load. Unlike shaded‑pole motors, they don’t rely on passive phase shifting

Q: How do I size a run/start capacitor?
A: Match the capacitor spec given on the motor nameplate or application documentation. 

📌 Final Thoughts

Square One Electric Motors & Pumps offers unbeatable access to Marathon Single Phase Motors spanning HP, enclosure, and frame needs. Backed by strong Marathon and Regal Rexnord pedigree, these motors deliver reliability, efficiency, and longevity. Use this landing page to inform, engage, and convert visitors searching for top-tier single-phase motors.

Ready to order or need assistance?
Contact us now or browse the full product list to find your next Marathon motor today!