MARATHON 6VD56C17F5321F Motor Frame G571 1/2 115/208-230V 1PH 56C-65

( Brand: Marathon ), ( Manufacturer Part Number: 6VD56C17F5321F ), ( Model: 6VD56C17F5321F P ), ( Part Type: Hp Motor Frame )

Review MARATHON Motor 1/2 Hp 115/208-230v 1ph Frame

The **Marathon 6VD56C17F5321F Motor (G571, HP, 115/208-230V, 1-Phase, 56C-65 Frame)** is a robust, high-performance electric motor engineered for reliability, efficiency, and versatility in a wide range of industrial, commercial, and residential applications. Part of Marathon s trusted **G571 series**, this motor combines premium construction with advanced design features to deliver consistent performance under demanding operating conditions. Built with a **56C-65 frame**, this compact yet durable motor is ideal for applications requiring precise speed control, smooth operation, and long-term dependability, such as HVAC systems, pumps, compressors, conveyors, and industrial machinery.

Powered by a ** horsepower (0.373 kW) output**, the motor operates seamlessly across a **dual-voltage range of 115V or 208-230V, single-phase**, making it adaptable to various electrical systems without the need for additional voltage conversion. Its **1-phase induction design** ensures efficient energy conversion while maintaining low noise and vibration levels, contributing to a quieter and more stable operational environment. The motor s **cast iron endbell and rotor construction** provides exceptional strength and resistance to thermal stress, while its **ball-bearing support system** enhances durability, reducing wear and extending service life even in high-load or continuous-duty applications.

One of the standout features of this motor is its **energy-efficient performance**, achieved through optimized winding configurations and high-quality insulation materials that minimize energy loss while maximizing torque output. The **NEMA Premium -compliant design** further ensures superior efficiency, reduced operating costs, and compliance with stringent industry standards for energy conservation. Additionally, the motor s **sealed construction** protects internal components from dust, moisture, and contaminants, making it suitable for both indoor and outdoor installations where environmental factors could otherwise compromise performance.

For ease of integration and maintenance, the **6VD56C17F5321F motor** is equipped with a **standard 56C-65 frame mounting configuration**, compatible with a wide range of industry-standard couplings, belts, and pulleys. Its **direct-on-line (DOL) starting capability** simplifies installation, while optional accessories like thermal protection and variable frequency drive (VFD) compatibility can be added for enhanced control and safety in more complex applications. Whether used in a commercial refrigeration unit, a residential air handler, or an industrial processing system, this motor delivers **consistent torque, smooth operation, and minimal maintenance requirements**, making it a cost-effective solution for applications demanding both performance and longevity.

Marathon s reputation for **reliability and innovation** is evident in every aspect of this motor, from its **high-grade steel laminations** that reduce core losses to its **precise balancing** for vibration-free operation. The motor s **IP54-rated enclosure** (when paired with appropriate guards) offers protection against solid foreign objects and low-pressure water jets, ensuring resilience in harsh environments. With a **full load current rating optimized for efficiency** and a **service factor of 1.15**, this motor not only meets but exceeds standard performance expectations, providing operators with a dependable power source that can handle peak loads without overheating or premature failure.

In summary, the **Marathon 6VD56C17F5321F Motor (G571, HP, 115/208-230V, 1-Phase, 56C-65 Frame)** is a premium-quality, versatile electric motor designed for applications where performance, efficiency, and durability are paramount. Whether integrated into a new system or used as a replacement for aging equipment, this motor offers a perfect balance of power, reliability, and ease of use, ensuring smooth operation and long-term cost savings for businesses and homeowners alike.

### **Pros and Cons of buying a Marathon 6VD56C17F5321F Motor (G571, HP, 115/208-230V, 1PH, 56C-65 Frame)**

1. **Reliable Brand Reputation** Marathon is a well-established manufacturer known for durable, high-quality motors, particularly in the commercial and industrial sectors. Their motors are often used in HVAC systems, pumps, and conveyor applications where longevity is critical.

2. **Wide Voltage Compatibility** The motor operates on **115V, 208V, or 230V**, making it versatile for different electrical setups without requiring significant modifications. This flexibility is useful if the installation location has varying voltage requirements.

3. **Standard Frame Size (56C-65)** The **56C-65 frame** is a common industrial motor frame size, meaning replacement parts, bearings, and accessories are widely available. This reduces long-term maintenance costs and makes repairs easier.

4. **Single-Phase Design** While less efficient than three-phase motors, single-phase motors like this are ideal for residential, small commercial, or locations where three-phase power is unavailable. They are also simpler to install and control.

- Small pumps (water, HVAC, or irrigation)

- Fans and blowers (ventilation, exhaust systems)

- Light-duty conveyors or agitators

- Appliances requiring a reliable, compact motor

6. **Energy-Efficient for Its Class** While not as efficient as premium IE3 or IE4 motors, it performs adequately for basic applications where high efficiency is not the primary concern.

7. **Affordable Compared to Premium Brands** Marathon motors are generally less expensive than premium brands like Baldor, TEFC, or WEG, making them a cost-effective choice for budget-conscious buyers.

8. **Easy to Install and Maintain** Single-phase motors require minimal wiring, and their straightforward design means fewer potential failure points compared to more complex three-phase motors.

---

1. **Lower Efficiency Than Premium Motors** This is a **standard-duty motor**, not an energy-efficient (IE2, IE3, or IE4) model. If energy savings are a priority, a more efficient motor (e.g., from WEG, ABB, or TEFC) would be a better long-term investment.

2. **No NEMA Premium Certification** Without NEMA Premium or similar efficiency ratings, the motor may consume more electricity over time, increasing operational costs, especially in continuous-use applications.

3. **Limited Warranty Compared to High-End Brands** Marathon typically offers a **1-year warranty**, whereas brands like WEG or Baldor may provide **3-5 years** on certain models. This could lead to higher maintenance costs if issues arise before warranty expiration.

4. **Single-Phase Limitations**

- **Lower starting torque** compared to three-phase motors, which can make it less suitable for heavy-load applications at startup.

- **Higher initial current draw** during startup, which may require additional circuit protection (e.g., larger breakers or capacitors for improved performance).

5. **Potential for Higher Noise and Vibration** Standard motors may produce more noise and vibration than premium, balanced designs, which could be an issue in noise-sensitive environments.

6. **Dependence on Aftermarket Parts** While parts are available, they may not always match the original quality, leading to potential reliability issues if substandard replacements are used.

7. **Not Ideal for High-Speed or Heavy-Duty Use** At ** HP**, this motor is not designed for continuous heavy loads, high-speed applications, or extreme environments (e.g., corrosive, explosive, or high-temperature settings). For such uses, a **TEFC (Totally Enclosed Fan-Cooled), explosion-proof, or higher HP motor** would be more appropriate.

8. **Voltage Drop Sensitivity** Single-phase motors can be sensitive to voltage fluctuations. If the power supply is unstable, the motor may overheat or fail prematurely.

---

### **Conclusion**

The **Marathon 6VD56C17F5321F ( HP, 1PH, 56C-65 frame)** is a **solid, cost-effective choice** for **light to moderate-duty applications** where reliability and affordability are prioritized over energy efficiency. It excels in **small pumps, fans, conveyors, and basic HVAC components** where three-phase power is unavailable or unnecessary.

- **High efficiency** (e.g., continuous operation),

- **Heavy starting torque** (e.g., pumps with high head pressure),

- **Extreme environmental conditions** (e.g., corrosive, explosive, or high-temperature),

- **Long-term cost savings** (due to lower energy consumption),

then investing in a **premium motor (e.g., WEG, Baldor, TEFC, or NEMA Premium-rated)** would be the better long-term decision despite the higher upfront cost.

---

### **Recommendation**

You need a **reliable, affordable single-phase motor** for **light-duty applications** (fans, small pumps, conveyors).

Your electrical setup supports **115V, 208V, or 230V single-phase**.

You prioritize **immediate cost savings** over long-term energy efficiency.

The motor will operate in a **moderate environment** (not extreme heat, moisture, or corrosive conditions).

You require **high efficiency** (e.g., for 24/7 operation).

The application demands **high starting torque** (e.g., lifting heavy loads).

You need **explosion-proof, washdown, or high-temperature-rated** protection.

Three-phase power is available, and a **more powerful or efficient motor** would be better suited.

- For **better efficiency**, look for **NEMA Premium or IE3-rated motors** (e.g., WEG, ABB, or TEFC).

- For **heavier loads**, consider a **three-phase motor** (e.g., Marathon 6VD56C with 3PH option).

- For **corrosive environments**, opt for a **TEFC (Totally Enclosed Fan-Cooled) or NEMA 4/4X motor**.

Details:

115/208-230V. USED, but in good working condition. 30LBS AN 1 QTY 5/28/26. 56C-65 Frame.

If you feel like the combined shipping price is not accurate. NEW, old inventory. REMANUFACTURED, rebuilt. Some exceptions may apply.

Need to combine orders from different listings. Marathon Motor VD56C17F5321F PO.

part #: 6vd56c17f5321f prices

• $112.50-$398.60

specifications oelemot:

• brand: Marathon
• mpn: 6vd56c17f5321f
• model: 6vd56c17f5321f P
• part type: Hp Motor Frame

shipping oelemot:

• transit: 4-7 Days
• carrier: FedEx
• class: Standard
• service: FedEx Ground / FedEx Home Delivery
• cost: $41.96
• type: Calculated

general oelemot:

• condition: Used
• Industrial Automation Motion Controls > Electric Motors > General Purpose Motors

payments oelemot:

• wallet: Apple-pay
• other
• credit card: Mastercard

seller oelemot:

• city: Clover, South Carolina
• # reviews: 106162
• rating: 99.9%

offer oelemot:

• availability: In Stock
• quantity: 1
• started: May 28, 2026
• sold: 0
• options: Ship-to-home

returns oelemot:

• method: Money back
• policy: Returns Accepted
• time: 30 Days
• paid by: Buyer

Marathon 6VD56C17F5321F Is Similar To:

• Kse56c34d852a Marathon Motor Volts Frame Dripproof (33.9% similar) Motor is new it was not installed run on a construction project. It is being sold as surplus...(July 23rd, 2018)
• 002-0002 Marathon Electric Motor Hp Works Great (36.7% similar) Great working motor with some cosmetic ware 1/2 shaft 3400RPM...(October 2nd, 2018)
• 043481999890 Marathon Hp Farm Duty Shop Motor (25.4% similar) Part: GEX31531 prices...(April 1st, 2019)
• 043481999920 Marathon Motors Hp Farm Duty Shop Motor (24% similar) Part: GEX31231 prices...(April 1st, 2019)
• 048s17d2090 Marathon Motors Electric Hp Motor Single Phase Hz Rpm (33.3% similar) Marathon electric 1/3 hp motor, new old stock, single phase, 60 Hz, 1725 rpm. Purchased out of maintenance department clearance offer...(March 24th, 2019)
• 056c17d2074 Marathon Motors Hp Rpm General Purpose Motor (23.3% similar) 40 degrees c motor shaft rotation cw cc DOA. The very best practice is to look at all pictures and ask questions before buying. Windy city liquidation is a corporation that helps its clients dispose of unwanted inventory. C charity or selling it directly to us. Ambient temp the voltage is, ...(July 20th, 2018)
• 056c17g15527 Marathon Electric Motor Model (31.3% similar) Hazardous location motor, capacitor start, motor shaft rotation cw cc, mounting type is rigid base, class 1 c,d 2 e,f,g, diameter 5/8 , length 7 less overall lead 6 duty continuous, bearings ball, frame material steel, standards are ul listed E12044 CSS certified LR47504. Marathon motor model ...(February 18th, 2019)
• 056h17e5301 Marathon Hp Rpm Epnv Motor New (31.3% similar) New, opened box for pictures. Weighs 30 lbs. Box has wear from shelving and writing on it. Please review all pictures...(October 17th, 2018)
• 056t17d1044-c00589-13 Marathon Electric Motor (27.1% similar) Marathon electric 1/2 hp ac motor 056T17D1044 C00589-13056T17D1044 C00589 HP208 volts 1725 1425 RPM3 unused condition...(July 28th, 2018)
• 056t17d15910 Marathon Motors Motor Keyed (30.1% similar) motor shaft design keyed. Ambient temp. 85 full load amps, no. 25 motor service factor, ball bearings, frame material rolled steel, max of speeds 1, mounting type rigid base, position horizontal, thermal protection none, ins...(August 4th, 2018)
• 056t17d2099f Marathon Motors Motor Hp Rpm Air Conditioner Fan Blower Ac (34.7% similar) 3RPM 1500 fl eff N/A sf air conditioning ac replaces. 4 rpm 1800 fl eff 75. It is new in the original opened box. Have a great day...(July 4th, 2018)