
( Brand: Marathon Motors ), ( Manufacturer Part Number: 5KH36LNB464CX ), ( Model: MARATHON MOTORS 5KH36LNB464CX ), ( Part Type: Ac Hp Motor ), ( Rated Load: Hp ), ( Current Type: Ac ), ( Nominal Rated Input Voltage: 230 V ), ( Iec Frame Size: 48 ), ( Ac Frequency Rating: 60 Hz ), ( Ac Phase: Single Phase )
The **Marathon 5KH36LNB464CX** is a robust, high-performance ** horsepower (0.25 HP) single-phase alternating current (AC) motor** designed for demanding industrial, commercial, and residential applications where reliability, efficiency, and durability are paramount. Engineered with Marathon s reputation for quality and longevity, this motor operates seamlessly within a **208 230V AC** voltage range, making it versatile for a wide range of electrical systems in North America and other regions with compatible power standards. With a **1725 RPM** synchronous speed, it delivers consistent rotational performance, ideal for applications requiring precise and steady mechanical motion, such as fans, blowers, pumps, compressors, conveyors, and small machinery. The motor s compact yet sturdy **NEMA Premium ** design ensures minimal energy loss while maximizing torque output, contributing to both operational efficiency and cost savings over time.
Constructed with **high-grade silicon steel laminations** and a **high-efficiency winding configuration**, the 5KH36LNB464CX minimizes core losses and reduces heat generation, extending the motor s operational lifespan and reducing the need for frequent maintenance. Its **ball-bearing support system** provides smooth, vibration-dampened operation, reducing wear on connected equipment and enhancing overall system reliability. The motor s **IP54 enclosure rating** offers robust protection against dust, dirt, and splashing water, making it suitable for both indoor and outdoor environments where environmental exposure is a concern. Additionally, its **Class B insulation** (130 C rise) ensures thermal resilience, allowing it to handle continuous operation under moderate to high-load conditions without compromising performance.
Ideal for applications requiring **compact yet powerful performance**, this motor is particularly well-suited for HVAC systems, industrial automation, agricultural equipment, and commercial ventilation setups. Its **universal compatibility** with standard 208 230V AC power supplies simplifies installation and integration into existing electrical infrastructures, while its **low-noise operation** contributes to quieter, more pleasant working environments. Whether used in a manufacturing plant, a commercial building, or a residential setting, the Marathon 5KH36LNB464CX delivers a perfect balance of **power, efficiency, and endurance**, ensuring dependable performance for years to come. Built to Marathon s stringent quality standards, this motor embodies the reliability that industries depend on, making it a trusted choice for engineers, contractors, and maintenance professionals seeking a dependable, long-lasting electric motor solution.
### **Pros and Cons of buying a Marathon 5KH36LNB464CX (1/4 HP, 1725 RPM, 208-230V AC Motor)**
#### **Pros:**1. **Reliable Brand Reputation** Marathon is a well-known manufacturer of quality motors, pumps, and HVAC components, offering durable and long-lasting products with good customer support.
2. **Standard Voltage Compatibility** Operates on both 208V and 230V single-phase power, making it versatile for different electrical setups without needing voltage conversion.
3. **Common RPM for Many Applications** 1725 RPM is a standard speed for fractional horsepower motors, making it suitable for fans, blowers, small compressors, and light-duty machinery.
4. **Fractional Horsepower Efficiency** A 1/4 HP motor is sufficient for low-to-moderate load applications, reducing energy consumption compared to larger motors for similar tasks.
5. **Easy Installation** Standard NEMA or metric mounting options (depending on model) allow for straightforward integration into existing systems.
6. **Cost-Effective for Basic Needs** Generally more affordable than premium industrial motors while still providing reliable performance for residential, light commercial, or small-scale industrial use.
7. **Wide Availability** As a common fractional HP motor, replacement parts and support are widely accessible through distributors and online retailers.
8. **Low Maintenance Requirements** Properly installed and maintained, this type of motor typically requires minimal upkeep, extending its operational lifespan.
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#### **Cons:**1. **Limited Power for Heavy Loads** A 1/4 HP motor is not designed for high-torque or continuous heavy-duty applications (e.g., large compressors, high-capacity pumps, or industrial machinery). Overloading can lead to overheating or premature failure.
2. **No Built-In Protection Features** Many standard fractional HP motors lack built-in overload protection, thermal cutouts, or electronic controls, which could require additional safeguards in certain applications.
3. **Noise and Vibration Potential** Without proper balancing or mounting, motors of this size can generate noticeable noise or vibration, which may be an issue in sensitive environments.
4. **Dependence on Proper Enclosure** If used in dusty, wet, or corrosive environments, the motor may require an NEMA-rated enclosure (e.g., NEMA 1, 3R, or 4) for protection, adding to the cost.
5. **Limited Lifespan Under Stress** While durable, continuous operation near its maximum capacity or in harsh conditions can reduce its lifespan compared to motors designed for heavy-duty use.
6. **No Energy-Saving Features** Unlike premium variable-speed or high-efficiency motors, this is a standard induction motor with fixed speed and efficiency, which may not be optimal for energy-conscious applications.
7. **Potential for Compatibility Issues** If the motor is being repurposed for a non-standard application (e.g., high-altitude use without derating), performance may suffer unless adjustments are made.
8. **Warranty Limitations** Standard warranties on fractional HP motors are often shorter (e.g., 1 2 years) compared to industrial-grade motors, which may have extended coverage.
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### **Conclusion:** The **Marathon 5KH36LNB464CX** is a **practical and cost-effective choice** for **light-duty, low-to-moderate load applications** such as:- Small fans or blowers (e.g., attic ventilation, exhaust systems).
- Light-duty pumps (e.g., irrigation, dewatering).
- Appliances like window AC units, small compressors, or industrial machinery with minimal torque requirements.
- Replacement motors where brand reliability and standard compatibility are priorities.
However, it is **not suitable** for:- High-torque or continuous heavy-duty work (e.g., large compressors, high-pressure pumps).
- Applications requiring variable speed or energy efficiency optimizations.
- Environments with extreme dust, moisture, or corrosive conditions without proper enclosure upgrades.
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### **Recommendation:**- **Buy if:** You need a **reliable, affordable, and standard-compatible motor** for a **low-load application** where durability and ease of replacement are key. Ensure the motor s **HP, voltage, and RPM match your system s requirements** to avoid performance issues.
- **Avoid if:** Your application demands **high torque, variable speed, or extended lifespan under heavy use**. In such cases, consider:- A **higher HP motor** (e.g., 1/2 HP or 3/4 HP) for increased capacity.
- A **variable-frequency drive (VFD)-compatible motor** for energy savings and speed control.
- A **premium industrial motor** with built-in protections (e.g., thermal overload, NEMA 4X enclosure) for harsh environments.
For most **residential or light commercial uses**, this motor is a **solid, no-frills option** that balances cost and performance. Always verify **mounting dimensions, shaft size, and electrical compatibility** with your specific application before purchasing.
Great for replacement applications in commercial equipment. Permanently lubricated ball bearings. Enclosure: DP. Frequency: 60 Hz.
voltage : 208 230V. Power: 1/4 HP. Model: 5KH36LNB464CX. Used / working-condition commercial Marathon AC motor.
Please review photos carefully for condition and compatibility. Specifications from label: Brand: Marathon Motors. Phase: Single Phase.