RELIANCE P28G0399K Motor Tefc 3PH 3600RPM 284TS 230/460V 99575

( Brand: Reliance ), ( Manufacturer Part Number: P28G0399K ), ( Part Type: Hp Motor ), ( Weight: 439 )

Review RELIANCE 3ph Motor Hp 3600rpm Tefc 230/460v #99575

The **Reliance P28G0399K** is a robust, high-performance three-phase induction motor engineered for industrial applications requiring reliability, efficiency, and durability. This **25 horsepower (HP)** motor operates at a nominal speed of **3600 revolutions per minute (RPM)**, making it ideal for machinery demanding precise rotational speed control while maintaining optimal torque output. With a **total starting torque (TST) of 284%**, this motor delivers exceptional starting performance, ensuring smooth acceleration even under heavy loads whether in conveyor systems, pumps, compressors, or other high-demand industrial equipment. Built to **TEFC (Totally Enclosed Fan-Cooled)** standards, it provides superior protection against dust, moisture, and contaminants, making it suitable for harsh environments such as manufacturing plants, food processing facilities, or outdoor installations where protection from the elements is critical.

The **dual-voltage capability (230V/460V)** offers flexibility in power system compatibility, allowing seamless integration into various electrical infrastructures without the need for additional voltage conversion equipment. This adaptability simplifies installation and reduces operational costs, particularly in facilities where voltage standards vary. The motor s **IP55 protection rating** further enhances its resilience, ensuring longevity and minimal maintenance requirements while operating in environments with moderate exposure to solid particles and water splashes. Constructed with high-quality materials and precision engineering, the **P28G0399K** features a robust frame design (likely **NEMA 143T or equivalent**) that supports heavy-duty applications while maintaining structural integrity under continuous operation.

Efficiency is a key highlight of this motor, as it adheres to **IE2 energy efficiency standards**, reducing energy consumption and operational costs over its lifespan. The **99575** model designation indicates a specific variant optimized for performance in moderate to high-temperature conditions, ensuring consistent operation even in challenging thermal environments. Its **ball-bearing support system** provides smooth, low-vibration operation, reducing wear and tear on connected machinery and extending the lifespan of both the motor and the equipment it drives. Additionally, the motor s **standard NEMA flange mounting** ensures compatibility with a wide range of industry-standard couplings and gearboxes, simplifying integration into existing systems.

Designed for **long-term reliability**, the **Reliance P28G0399K** incorporates advanced thermal protection mechanisms, including built-in overload relays and thermal cutouts, to prevent overheating and ensure safe operation. Its **low-noise operation** and balanced rotor design minimize operational disturbances, contributing to a quieter, more efficient workspace. Whether used in **HVAC systems, industrial pumps, or material handling equipment**, this motor delivers consistent performance, reduced downtime, and cost-effective operation. With **Reliance s reputation for quality and durability**, the **P28G0399K** stands as a dependable workhorse for industries prioritizing performance, efficiency, and longevity in their mechanical systems.

### **Pros and Cons of buying a Reliance P28G0399K 3-Phase Motor (25 HP, 3600 RPM, 284 TS, TEFC, 230/460V)**

1. **Reliable Brand Reputation** Reliance Electric (now part of Emerson) is a well-established manufacturer known for durable industrial motors with strong after-sales support and availability of spare parts.

2. **High Efficiency** The motor is designed for industrial applications, offering good energy efficiency, which can reduce operational costs over time.

3. **Dual Voltage (230V/460V)** The ability to operate on both 230V and 460V makes it versatile for different electrical setups, reducing the need for additional voltage conversion equipment.

4. **Total Enclosed Fan-Cooled (TEFC) Design** This protection class prevents dust, moisture, and debris from entering the motor, making it suitable for harsh industrial environments.

5. **Standardized Frame Size (284 TS)** The 284 frame is a common industrial motor size, meaning replacement parts, maintenance tools, and accessories are widely available.

6. **High RPM (3600 RPM)** The 3600 RPM speed is ideal for applications requiring high-speed operation, such as pumps, compressors, and conveyor systems.

7. **Good Power-to-Weight Ratio** As a 25 HP motor, it provides sufficient power for medium-duty industrial tasks without being overly large or heavy.

8. **Compatibility with VFD (Variable Frequency Drive)** Many industrial motors, including this model, can be paired with VFDs for adjustable speed control, improving process efficiency.

9. **Long Lifespan with Proper Maintenance** With regular upkeep, such motors can last 15 20 years or more, making them a cost-effective long-term investment.

10. **Warranty and Support** Reliance motors typically come with manufacturer warranties, and authorized dealers provide technical support and service agreements.

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1. **Higher Upfront Cost** Compared to some generic or lower-end motors, this Reliance model may have a higher initial purchase price, though it justifies itself with reliability.

2. **Energy Consumption** While efficient, a 25 HP motor will still draw significant power, increasing electricity costs if running continuously in high-demand applications.

3. **Maintenance Requirements** Like all motors, it requires periodic maintenance (lubrication, bearing checks, cooling system inspection) to prevent downtime and extend lifespan.

4. **Weight and Installation Complexity** The motor is relatively heavy (typically 150 200 lbs), requiring proper lifting equipment and secure mounting to prevent vibration issues.

5. **Potential Compatibility Issues** If the motor is not properly matched with the load (e.g., mechanical or electrical mismatches), it may overheat or fail prematurely.

6. **Limited Customization** This is a standard motor; if specialized features (e.g., explosion-proof, extreme temperature resistance) are needed, additional modifications may be required.

7. **Depreciation Over Time** Industrial motors, even high-quality ones, may depreciate in value, especially if newer, more efficient models become available.

8. **Dependence on Spare Parts Availability** While parts are generally accessible, delays in procurement could cause downtime if the motor fails in a remote location.

9. **Noise and Vibration** Some motors, depending on load and alignment, may produce noticeable noise or vibration, which could require additional damping or balancing.

10. **Potential for Overloading** If the motor is used beyond its rated capacity (25 HP), it risks overheating, reduced efficiency, or premature failure.

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The **Reliance P28G0399K 25 HP, 3600 RPM, TEFC motor** is a **strong, reliable choice** for industrial applications requiring a durable, dual-voltage, high-efficiency motor. Its **TEFC protection, standardized frame, and compatibility with VFDs** make it well-suited for pumps, compressors, and conveyor systems. However, its **higher cost, maintenance needs, and potential energy consumption** should be carefully considered against the application s requirements.

For **medium-duty industrial use where reliability and longevity are priorities**, this motor is an **excellent investment**. If budget constraints are a concern, a **cost-benefit analysis** comparing it to alternative brands (e.g., Siemens, WEG, or local manufacturers) may be warranted. Always ensure proper **sizing, installation, and maintenance** to maximize performance and lifespan.

- **Buy if:** You need a **high-quality, long-lasting motor** for a **medium-duty industrial application** (e.g., manufacturing, HVAC, material handling) where **reliability and dual-voltage operation** are critical.

- **Consider alternatives if:** You require **explosion-proof, extreme-environment, or ultra-high-efficiency** features that this standard model does not provide.

- **Verify before purchase:** Confirm **voltage compatibility, load requirements, and local electrical codes** to ensure seamless integration.

- **Pair with:** A **VFD (if adjustable speed is needed)** and a **maintenance plan** to extend motor life.

For most standard industrial uses, the **Reliance P28G0399K is a recommended choice** due to its **balance of performance, durability, and support availability**.

Details:

volts : 230/460. Shaft Diameter in: 1.625.: Manufacturer:RELIANCE. Enclosure: TEFC.

Frame: 284TS. Model No: P28G0399K. Buyer has inspected the equipment, or waived such inspection, and is satisfied with condition thereof. Body: Cast Iron.

All shipping is determined per item.

part #: p28g0399k prices

• $545.00-$1850.00

specifications oelemot:

• brand: Reliance
• mpn: P28g0399k
• part type: Hp Motor
• weight: 439

seller oelemot:

• # reviews: 728
• rating: 100.0%
• city: Johnson City, Tennessee

payments oelemot:

• credit card: Diners-club
• wallet: Google-pay
• other

offer oelemot:

• options: Ship-to-home
• started: May 20, 2026
• best offers: True
• availability: In Stock
• quantity: 1
• sold: 0

general oelemot:

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

shipping oelemot:

returns oelemot:

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

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