MARATHON 5KCP39PGK271S Ac Motor 3HP 3PH 230/460V 1750RPM 60HZ SF1.15

( Brand: Marathon ), ( Manufacturer Part Number: 5KCP39PGK271S ), ( Part Type: Ac Motor ), ( Actual Rated Input Voltage: 230/460 ), ( Full Load Amps: 8.2/4.1 ), ( Ac Frequency Rating: 60 Hz ), ( Base Rpm: 1750 ), ( Ac Motor Type: Induction/asynchronous ), ( Mounting Type: Base-mounted ), ( Current Type: Ac ), ( Service Factor: 1.15 ), ( Nominal Rated Input Voltage: 230 V, 460 V ), ( Ac Phase: Three Phase )

Review MARATHON 3hp 3ph Ac Motor 230/460v 1750rpm 60hz

The **Marathon 5KCP39PGK271S** is a robust, high-performance **3-phase AC induction motor** engineered for industrial reliability and efficiency, making it an ideal choice for demanding applications in manufacturing, HVAC systems, conveyors, pumps, and material handling equipment. This **3 horsepower (3HP) motor** operates seamlessly across a dual-voltage configuration of **230V/460V**, providing flexibility for integration into diverse electrical systems without the need for additional voltage conversion hardware. With a **synchronous speed of 1750 RPM at 60Hz**, it delivers consistent torque and smooth operation, ensuring optimal performance in both light-duty and moderately heavy workloads.

Designed with **Service Factor 1.15**, this motor exceeds standard performance expectations, allowing for temporary overloads without compromising longevity, which is particularly advantageous in applications with fluctuating demand or occasional peak loads. The **NEMA Premium efficiency rating** ensures minimal energy consumption while maintaining high output, contributing to cost savings and reduced environmental impact over the motor s operational lifespan. Built with **Marathon s proprietary high-quality materials**, including a robust **die-cast aluminum housing**, this motor is resistant to corrosion, vibration, and thermal stress, enhancing durability in harsh industrial environments.

The **5KCP series** incorporates **ball-bearing support** for extended bearing life and reduced maintenance requirements, while the **open drip-proof (ODP) enclosure** (NEMA Design B) provides basic protection against solid particles and splashing water, making it suitable for indoor or lightly exposed outdoor installations. Its **compact yet sturdy frame size (56C)** balances space efficiency with structural integrity, allowing for easy integration into existing machinery without sacrificing performance. Additionally, the motor s **low-noise operation** and **vibration-dampening design** contribute to a quieter, more stable working environment, reducing operational disruptions.

Ideal for **OEM applications, commercial HVAC systems, and industrial automation**, the **5KCP39PGK271S** combines **Marathon s reputation for quality** with **industry-leading reliability**, ensuring dependable performance for years with minimal downtime. Whether used in **conveyor systems, fans, compressors, or other mechanical drives**, this motor delivers a perfect blend of **efficiency, durability, and adaptability**, making it a smart investment for businesses seeking long-term operational excellence.

### **Pros and Cons of buying a Marathon 5KCP39PGK271S (3HP, 3-Phase AC Motor, 230/460V, 1750 RPM, 60Hz, SF1.15)**

1. **Reliable Brand Reputation** Marathon is a well-established manufacturer known for producing durable industrial motors, particularly in the NEMA Premium and Energy Star efficiency categories. Their motors are widely used in HVAC, pumps, and industrial applications, which suggests a track record of reliability.

2. **Energy Efficiency (SF1.15)** The motor has a Service Factor (SF) of 1.15, meaning it can handle 15% more load than its rated capacity without overheating. This improves efficiency and extends motor life under moderate overload conditions. The efficiency rating (likely NEMA Premium or Energy Star) ensures lower power consumption compared to standard motors, reducing operational costs.

3. **Dual Voltage (230/460V)** The ability to operate at both 230V and 460V provides flexibility for different electrical setups. This is particularly useful in facilities where voltage requirements may vary or where future voltage adjustments are needed.

4. **Standard NEMA Frame (56C)** The NEMA 56C frame is a common industrial standard, making it easier to find replacement parts, bearings, and accessories. This also simplifies integration with existing equipment and conveyor systems.

5. **Rated Speed (1750 RPM)** At 1750 RPM, this motor is suitable for applications requiring moderate speed, such as fans, blowers, compressors, and certain types of pumps. The speed is consistent with many standard industrial applications, reducing the need for additional gearing.

6. **3-Phase Design** Three-phase motors are generally more efficient, smoother in operation, and better suited for high-torque applications compared to single-phase motors. This makes them ideal for continuous-duty industrial use.

7. **Compact and Lightweight for Its Power** At 3HP, this motor is relatively small and lightweight for its output, which can be advantageous in space-constrained environments or where weight is a consideration.

8. **Compatibility with Variable Frequency Drives (VFDs)** Many Marathon motors are designed to work with VFDs, allowing for speed control and energy savings in applications where variable speed is beneficial (e.g., fans, pumps).

9. **Warranty and Support** Marathon offers standard warranties (typically 1 2 years) and may provide extended warranties or local service support, depending on the region. Their motors are also backed by a network of distributors and service centers.

10. **Cost-Effective for Mid-Range Applications** While not the highest efficiency motor on the market (e.g., IE4 or super-premium motors), it strikes a balance between performance and cost, making it a practical choice for many industrial applications.

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1. **Not the Highest Efficiency (IE3 or IE4)** While the motor is likely NEMA Premium (IE2 or IE3), it does not meet the most advanced efficiency standards (IE4). For applications where energy savings are critical (e.g., large-scale HVAC or continuous operation), a higher-efficiency motor (e.g., from ABB, Siemens, or other premium brands) may offer better long-term cost savings.

2. **Limited Customization** Marathon motors are designed for standard applications. If your use case requires highly specialized features (e.g., explosion-proof, hermetically sealed, or custom mounting), you may need to look elsewhere.

3. **Potential for Higher Initial Cost Than Basic Motors** While not excessively expensive, a NEMA Premium motor will cost more upfront than a standard efficiency motor. The higher cost may not be justified for low-duty-cycle or non-critical applications.

4. **Dependence on Voltage and Frequency** The motor is rated for 60Hz and 230/460V. If your system operates at 50Hz or requires non-standard voltages, this motor will not be compatible without modifications (e.g., a frequency converter).

5. **Maintenance Requirements** Like all motors, this one will require periodic maintenance (e.g., lubrication, bearing inspection, and alignment checks). Poor maintenance can reduce its lifespan and efficiency, especially in harsh environments (e.g., dusty, humid, or corrosive conditions).

6. **Limited Availability of Spare Parts** While NEMA 56C is common, some specialized components (e.g., rare bearings or seals) may have longer lead times or higher costs if the motor is discontinued.

7. **Noise and Vibration** Industrial motors can generate noise and vibration, especially under load. If your application requires ultra-low noise (e.g., in sensitive environments), you may need to pair this motor with additional dampening or isolation systems.

8. **Overload Capacity Not Infinite** While the SF1.15 allows for short-term overloads, prolonged operation above rated capacity can reduce the motor s lifespan. This requires careful application matching to avoid premature failure.

9. **Potential for Compatibility Issues with Non-Standard Systems** If your system has non-standard electrical or mechanical interfaces (e.g., unconventional shaft sizes or mounting flanges), you may need adapters or modifications.

10. **Resale Value** Like most industrial equipment, motors lose value over time. If you anticipate upgrading or selling the motor later, its resale value may not justify the initial investment compared to higher-end brands.

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The **Marathon 5KCP39PGK271S (3HP, 3-phase, 230/460V, 1750 RPM, SF1.15)** is a **solid, mid-range industrial motor** that offers a good balance of efficiency, reliability, and cost for standard applications. It is well-suited for **HVAC systems, pumps, fans, compressors, and other continuous-duty industrial uses** where moderate efficiency and durability are priorities.

- Applications requiring **ultra-high efficiency** (e.g., IE4 or super-premium motors).

- **Highly specialized environments** (e.g., explosive atmospheres, extreme temperatures, or corrosive conditions).

- **Low-duty-cycle or non-critical uses** where a cheaper, standard-efficiency motor would suffice.

- **Systems with non-standard electrical or mechanical requirements** (e.g., 50Hz, unconventional voltages, or custom shaft sizes).

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- You need a **reliable, efficient, and cost-effective** 3HP, 3-phase motor for standard industrial applications.

- Your system operates at **60Hz and 230/460V**, and the NEMA 56C frame is compatible with your equipment.

- You prioritize **Marathon s reputation for durability** and the **benefits of a Service Factor of 1.15**.

- Your application does not require **the highest efficiency** (e.g., IE4) or **specialized environmental protection**.

- You need **maximum energy efficiency** (e.g., for large-scale or 24/7 operations) Look at **IE4 motors from ABB, Siemens, or other premium brands**.

- Your environment is **extremely harsh** (e.g., high dust, humidity, or corrosive chemicals) Consider **explosion-proof, totally enclosed, or chemically resistant motors**.

- You require **custom speed control or variable torque** Evaluate **VFD-compatible motors or servo motors**.

- Your budget is tight, and the application is **non-critical** A **standard efficiency motor** (e.g., from Reliance, WEG, or TECO) may suffice.

For most **standard industrial applications** where efficiency, reliability, and cost are balanced, the **Marathon 5KCP39PGK271S is a strong choice**. However, for applications demanding **peak efficiency, extreme durability, or specialized features**, exploring higher-end or more customized motors may be worthwhile. Always verify **voltage, speed, and mechanical compatibility** with your specific application before purchasing.

Details:

Marathon 5KCP39PGK271S 3HP 3PH AC Motor 230/460V 1750RPM 60Hz SF1.15.

part #: 5kcp39pgk271s prices

• $149.00-$530.67

specifications oelemot:

• brand: Marathon
• mpn: 5kcp39pgk271s
• part type: Ac Motor
• actual rated input voltage: 230/460
• full load amps: 8.2/4.1
• ac frequency rating: 60 Hz
• base rpm: 1750
• ac motor type: Induction/asynchronous
• mounting type: Base-mounted
• current type: Ac
• service factor: 1.15
• nominal rated input voltage: 230 V, 460 V
• ac phase: Three Phase

general oelemot:

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

shipping oelemot:

• class: Standard
• cost: $84.24
• type: Calculated
• transit: 6-10 Days
• carrier: USPS
• service: USPS Ground Advantage

seller oelemot:

• rating: 0.0%
• # reviews: 0
• city: Shoreham, New York

returns oelemot:

• policy: No Returns

payments oelemot:

• other
• wallet: Paypal
• credit card: Diners-club

offer oelemot:

• sold: 0
• options: Ship-to-home
• quantity: 1
• availability: In Stock
• best offers: True
• started: May 23, 2026

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