RELIANCE ELECTRIC P56H3647R Motor Frame Ac 3-PHASE EB56C 1/4HP 1140RPM

( Brand: Reliance Electric ), ( Manufacturer Part Number: P56H3647R ), ( Model: P56H3647R-XU ), ( Part Type: Motor Frame ), ( Rated Load: Hp ), ( Current Type: Ac ), ( Base Rpm: 1140 ), ( Nominal Rated Input Voltage: 208 V, 230 V, 460 V ), ( Ac Phase: Three Phase )

Review RELIANCE ELECTRIC 3-phase A c Motor Frame 1/4hp 1140rpm

The **Reliance Electric P56H3647R** is a robust, high-performance **3-phase AC induction motor** designed for precision, reliability, and efficiency in a wide range of industrial and commercial applications. Built to the **NEMA EB56C frame standard**, this compact yet powerful motor delivers ** horsepower (0.25 hp)** of continuous output while maintaining exceptional durability under demanding operational conditions. With a **rated speed of 1,140 RPM at 60 Hz**, it strikes an optimal balance between torque and speed, making it ideal for conveyor systems, small machinery, pumps, compressors, and automated equipment where consistent performance is critical. The motor s **squirrel-cage rotor construction** ensures smooth, low-maintenance operation, while its **class B insulation rating** (130 C rise) provides extended service life even in moderate thermal environments. Engineered with **Reliance Electric s reputation for quality**, this motor features a **cast iron endbell and housing**, offering superior strength and resistance to vibration, while its **ball-bearing support system** minimizes friction and wear for prolonged operational efficiency. The **3-phase AC design** allows for seamless integration into standard industrial power systems, delivering reliable torque output across a broad range of loads. Whether used in manufacturing, HVAC systems, or material handling, the **P56H3647R** combines **compact frame dimensions with high torque characteristics**, making it a versatile choice for applications requiring precision, endurance, and dependable performance without the complexity of more specialized motor types. Its **standard NEMA mounting configuration** ensures easy installation and compatibility with existing equipment, while its **low-noise operation** contributes to a quieter, more efficient workspace. Built to withstand the rigors of continuous duty, this motor exemplifies **Reliance Electric s commitment to engineering solutions that balance power, efficiency, and longevity**, making it a dependable workhorse for industries where reliability is non-negotiable.

### **Pros and Cons of buying a Reliance Electric P56H3647R (3-Phase AC Motor, EB56C Frame, 1/4 HP, 1140 RPM)**

1. **Reliable Brand Reputation** Reliance Electric is a well-established manufacturer known for durable industrial motors, ensuring long-term performance and reliability.

2. **Standardized Frame Size (EB56C)** The EB56C frame is a common industrial motor size, making it easier to find replacement parts, mounts, and accessories if needed.

3. **Efficient Performance** At 1/4 HP and 1140 RPM, this motor is suitable for light to moderate industrial applications, such as small conveyors, pumps, or fans, where efficiency matters.

4. **3-Phase AC Compatibility** Works seamlessly with standard 3-phase electrical systems (typically 208V, 230V, or 460V), making it versatile for most industrial setups.

5. **Low Maintenance** As a sealed motor, it typically requires minimal upkeep, reducing downtime for routine servicing.

6. **Available Replacement Parts** Due to its popularity, spare parts (bearings, windings, seals) are widely available from Reliance or compatible third-party suppliers.

7. **Energy Efficiency** Modern designs often include features like improved insulation and optimized windings, contributing to better energy efficiency compared to older models.

8. **Compatibility with VFD (Variable Frequency Drive)** If future upgrades are needed, this motor can often be paired with a VFD for speed control in applications requiring variable torque.

1. **Limited Power Output (1/4 HP)** At only 1/4 horsepower, this motor is best suited for small applications. Larger or high-torque tasks may require a more powerful motor.

2. **Potential Age of Model** If this is a used or older stock motor, it may lack newer energy-saving features found in more recent Reliance models.

3. **Higher Upfront Cost Compared to Generic Motors** While reliable, it may be more expensive than non-branded or generic motors of similar specifications.

4. **Specialized Electrical Requirements** Requires a 3-phase power supply, which may not be available in all settings (e.g., some small workshops or residential applications).

5. **Bearing Wear Over Time** Like all motors, bearings degrade with use. If the motor has high vibration or noise, it may need bearing replacement sooner than expected.

6. **Limited Customization** Unlike some high-end motors, this model may not offer adjustable features like built-in overload protection or specific mounting options.

7. **Potential Lead Times for Replacement Parts** While parts are available, if the motor is discontinued, sourcing exact replacements could take longer than for more commonly stocked models.

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### **Conclusion**

The **Reliance Electric P56H3647R** is a solid choice for **light to moderate industrial applications** where reliability, standardized sizing, and ease of maintenance are priorities. Its **1/4 HP rating and 1140 RPM** make it ideal for small conveyors, pumps, fans, or machinery requiring consistent but low-torque performance. The **EB56C frame** ensures compatibility with existing setups, and the **3-phase AC design** makes it versatile for most commercial or light industrial environments.

However, if the application demands **higher power, variable speed control, or extreme durability**, a more specialized motor (e.g., a higher HP model or one with built-in protection) may be necessary. Additionally, if cost is a major concern, a **generic or aftermarket motor** of similar specifications might suffice for less critical applications.

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### **Recommendation**

- You need a **reliable, low-maintenance 3-phase AC motor** for a **small-scale industrial or commercial application** (e.g., conveyor belts, small pumps, or ventilation systems).

- You prioritize **brand reliability** and **easy availability of parts**.

- Your setup already uses **EB56C frame motors**, ensuring mechanical compatibility.

- You operate in a **3-phase electrical environment** (208V, 230V, or 460V).

- You require **higher horsepower** (e.g., 1 HP or above) for heavier loads.

- You need **variable speed control**, which may require pairing with a **VFD-compatible motor**.

- You are working in a **budget-sensitive environment** where a generic motor could suffice.

- The motor is **used or from an older stock**, and you want the latest efficiency features.

**Final Verdict:** This motor is a **good, practical choice** for its intended use, balancing reliability, compatibility, and performance. If within budget and specifications align with your needs, it is a **recommended purchase**. For larger or more demanding applications, explore higher-rated or VFD-capable models.

Details:

Nameplate shows: - model: P56H3647R-XU Power: 1/4 HP Speed: 1140 RPM voltage : 208-230/460V Phase: 3 Phase Frame: EB56C Type: Service Factor: 1.15 Insulation Class: F Ambient: 40C, condition: Used surplus condition. Used Reliance Electric Duty Master 5200 A-C motor. Included: Only the motor shown in photos. Please review all photos carefully for overall condition.

Shows normal cosmetic wear from previous use/ storage, including scuffs, scratches, and paint.

part #: p56h3647r prices

• $140.00-$400.00

specifications oelemot:

• brand: Reliance Electric
• mpn: P56h3647r
• model: P56h3647r-xu
• part type: Motor Frame
• rated load: Hp
• current type: Ac
• base rpm: 1140
• nominal rated input voltage: 208 V, 230 V, 460 V
• ac phase: Three Phase

payments oelemot:

• other
• wallet: Google-pay
• credit card: Visa

offer oelemot:

• started: March 25, 2026
• best offers: True
• options: Ship-to-home
• availability: In Stock
• quantity: 1
• sold: 0

general oelemot:

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

returns oelemot:

• policy: No Returns

seller oelemot:

• city: Miami, Florida
• # reviews: 653
• rating: 100.0%

shipping oelemot:

• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx
• cost: $93.51
• class: Standard
• transit: 5-10 Days
• type: Fixed

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