RELIANCE P56H3003G Master Electric Motor 1/4HP 3PH 208-230/460-480V 1725RPM

( Brand: Reliance ), ( Manufacturer Part Number: P56H3003G ), ( Part Type: Motor )

Review RELIANCE 1/4hp Duty Master Electric Motor 3ph 208-230/460-480v 1725rpm P56h300

The **Reliance P56H3003G** is a high-performance, industrial-grade **1/4 horsepower (0.3 kW) three-phase electric motor** engineered for reliability, efficiency, and versatility in demanding applications. Part of Reliance s trusted **P56H series**, this compact yet robust motor delivers consistent performance across a wide range of industrial, commercial, and HVAC systems, making it an ideal choice for conveyor belts, pumps, compressors, fans, and other mechanical drives requiring precise and dependable operation. With a **1725 RPM synchronous speed**, the motor balances speed and torque, ensuring smooth and efficient power transmission while minimizing energy waste.

Designed for **dual-voltage compatibility**, the P56H3003G operates seamlessly across **208 230V and 460 480V three-phase AC systems**, providing flexibility for integration into diverse electrical infrastructures without the need for additional voltage converters. Its **NEMA Premium efficiency rating** ensures optimal power conversion, reducing operational costs while maintaining high performance an essential feature for businesses prioritizing energy savings and sustainability. The motor s **TEFC (Totally Enclosed Fan-Cooled) construction** protects internal components from dust, moisture, and contaminants, extending its lifespan in harsh or unregulated environments, such as outdoor installations or environments with high particulate exposure.

Built with **high-quality materials and precision engineering**, the P56H3003G incorporates a **cast iron end shields and aluminum rotor**, offering a durable yet lightweight design that resists wear and vibration. The motor s **ball-bearing support system** ensures smooth operation and longevity, while its **low-noise operation** minimizes operational disturbances in sensitive applications. Reliance s reputation for **reliability and durability** is further reinforced by the motor s **sealed bearings and corrosion-resistant coatings**, which enhance resistance to rust and degradation over extended use. Additionally, the motor s **standard NEMA 345T frame** ensures compatibility with a wide range of industry-standard couplings, pulleys, and mounting hardware, simplifying installation and maintenance.

For applications requiring **precise control and efficiency**, the P56H3003G can be easily integrated with variable frequency drives (VFDs), allowing for adjustable speed regulation to optimize performance based on load demands. Its **low maintenance requirements** and **long service intervals** make it a cost-effective solution for businesses seeking to minimize downtime and operational disruptions. Whether deployed in manufacturing plants, commercial buildings, or industrial automation systems, this motor delivers **consistent power output, quiet operation, and exceptional reliability**, making it a dependable workhorse for a wide array of mechanical drives. With Reliance s commitment to **innovation and quality**, the P56H3003G stands as a testament to engineering excellence, providing a balance of performance, efficiency, and longevity in every application it serves.

### **Pros and Cons of buying a Reliance P56H3003G 1/4 HP 3-Phase Electric Motor**

1. **Reliable Brand Reputation** Reliance Electric (now part of Emerson) is a well-established manufacturer known for durable industrial motors, ensuring quality and longevity.

2. **Wide Voltage Range** The motor operates on **208-230V or 460-480V**, making it versatile for different industrial setups without needing voltage conversion.

3. **Standard NEMA Frame (56C)** The NEMA 56 frame is common in industrial applications, meaning replacement parts and accessories are widely available.

4. **High Efficiency & Performance** As a **1/4 HP (0.3 kW) motor**, it is designed for continuous duty, providing consistent torque at **1,725 RPM**, suitable for pumps, compressors, and small machinery.

5. **Low Maintenance** Being a **squirrel-cage induction motor**, it requires minimal upkeep compared to brushed DC motors or more complex servo motors.

6. **Cost-Effective for Small Applications** At **1/4 HP**, it is affordable for light-duty industrial, agricultural, or commercial use where higher power isn t required.

7. **Compatibility with Variable Frequency Drives (VFDs)** If retrofitted with a VFD, it can be adjusted for speed control, improving energy efficiency in variable-load applications.

8. **Global Availability** As a standard industrial motor, it is easy to source from distributors worldwide, reducing supply chain risks.

---

1. **Limited Power for Heavy Loads** At **1/4 HP**, it is only suitable for **light to medium-duty applications**. For high-torque or continuous heavy loads, a larger motor (e.g., 1 HP or higher) would be necessary.

2. **No Built-in Protection Features** Unlike some premium motors, this model may lack **integrated overload protection, thermal overload relays, or IP-rated enclosures** (unless specified in the exact model variant). Additional protection devices (like thermal cutouts) may be required.

3. **Fixed Speed Operation** Without a VFD, the motor runs at a **fixed 1,725 RPM**, limiting flexibility in applications requiring variable speeds.

4. **Potential Noise & Vibration** Induction motors can generate **mechanical noise and vibration**, which may require additional mounting or damping in sensitive environments.

5. **Energy Consumption** While efficient for its class, it still consumes power continuously when running, which may impact operational costs in high-usage scenarios.

6. **Warranty & Support Dependence** Since Reliance Electric is now part of Emerson, warranty and service support may be routed through their corporate channels, potentially leading to longer response times compared to smaller local suppliers.

7. **Limited Customization** Unlike specialized motors, this is a **standard off-the-shelf model**, meaning customizations (e.g., enclosures, mounting options) may not be available without modifications.

---

### **Conclusion & Recommendation**

The **Reliance P56H3003G 1/4 HP 3-phase motor** is a **solid, cost-effective choice** for **light to medium-duty industrial, agricultural, or commercial applications** where reliability, standard sizing, and versatility in voltage compatibility are priorities. It excels in **pumps, fans, small compressors, conveyors, and machinery requiring consistent but low-power operation**.

**Small workshops & factories** needing a dependable, easy-to-maintain motor.

**Agricultural equipment** (e.g., irrigation pumps, grain handling systems).

**HVAC & ventilation systems** with moderate airflow requirements.

**Commercial kitchens or food processing** (if properly enclosed and protected).

**Retrofit applications** where replacing an old motor with a standard NEMA 56 frame is cost-effective.

**High-torque or heavy-duty applications** (e.g., large conveyors, presses, or continuous high-load machinery).

**Applications requiring precise speed control** without a VFD.

**Harsh environments** (e.g., extreme dust, moisture, or corrosive conditions) unless paired with an appropriate enclosure.

**Budget-sensitive projects where a lower-cost generic motor (e.g., from a local manufacturer) would suffice**.

- You need a **reliable, standard NEMA 56 1/4 HP 3-phase motor** for a **light-duty application**.

- Your setup can accommodate **fixed-speed operation** or you plan to add a **VFD for speed control**.

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

- The **voltage range (208-230V/460-480V) matches your system**.

- You require **higher power (1 HP or above)** for demanding loads.

- The application needs **explosion-proof, waterproof, or high-IP-rated enclosures**.

- You want **lower upfront costs** and can accept a **lesser-known brand** with similar specs.

- **Energy efficiency** is critical, and you might benefit from a **premium IE3/IE4 motor**.

For most **standard industrial, agricultural, or commercial uses**, this motor provides a **good balance of performance, durability, and affordability**. Ensure proper **overload protection, wiring, and mounting** to maximize its lifespan.

Details:

Surplus Division. MPN: P56H3003G. ITEM TITLE: Reliance 1/4HP Duty Master Electric Motor 3PH, 208-230/460-480V 1725RPM, P56H300 Brand. Model: P56H3003G.

Most items are available in galvanized, carbon steel, stainless and aluminum as well. Condition: Used. Must ship to a commercial address with forklift and/or dock. Your Best Work Starts Here.

Our structural steel product line includes beams, road plates, flat sheets, expanded grating material, pipe, square round tubing, bars and metal roofing. Lot# DT226 W2.

part #: p56h3003g price

• $69.00

specifications oelemot:

• brand: Reliance
• mpn: P56h3003g
• part type: Motor

payments oelemot:

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

seller oelemot:

• # reviews: 14276
• city: Glassboro, New Jersey
• rating: 99.8%

returns oelemot:

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

general oelemot:

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

shipping oelemot:

• transit: 3-9 Days
• type: Calculated
• carrier: USPS, UPS
• cost: $83.95
• service: USPS Priority Mail, UPS Ground, UPS Next Day Air, UPS 2nd Day Air
• class: Expedited, Standard, One-day

offer oelemot:

• availability: In Stock
• started: February 9, 2026
• options: Ship-to-home
• quantity: 1
• sold: 0
• best offers: True

Reliance P56H3003G Is Similar To:

• 01069477349-000010 Baldor Reliance Super Spl Phase Electric Motor Rpm Frame (38% similar) These motors are unused, but dirty and have shelf wear. These were stock from a pump company that closed down. Several of these available in similar visual condition...(January 22nd, 2019)
• 01ka504712-ea Reliance Electric Fr Hp Rpm Motor Gear Reducer (35.1% similar) Encl: TEFL rotatory type: W63 u P71B5 code: 2G20011231 mount PPS b3 I item has scratches rust see pictures for details guaranteed not DOA Blake dc supply fled pm ABM 40 c max safe speed: insula f allowable peak amps form factor Reliance 01KA504712-EA fr SE0056C hp 1150 rpm motor w gear reducer ...(August 27th, 2018)
• 01man96238 Reliance Electric Duty Master (32.8% similar) Multiple items can be shipped together to the same location. Nothing more, less. If installed, show proof of installation by a qualified person. Reconditioned reliance electric - duty MASTERL184T5HP230 460V12...(August 1st, 2017)
• 01ubz6849701g Reliance Motor Used (24.8% similar) If another carrier such as ups or FedEx is required to ship due the size, then shipping costs may change...(October 3rd, 2018)
• 03ks500173c-nz Reliance Rpm Ac Motor Fr Encl Dp Bearings (29.2% similar) Warranty this item is guaranteed to be as described. Included: 1 Reliance 30-HP 3-PH rpm force-vent ac motor specifications: manufacturer: id: 03KS500173C-NZ 3 phase 460V, 39A 60 Hz, 1745 79 2300 30 hp duty: cont frame: L2158C encl. Please for details. Buyer pays for all shipping costs. Comes in non...(September 2nd, 2018)
• 03man77003 Reliance Electric 1 Hp (33.1% similar) This charge is for shipping, handling and materials. Items are sold as is. A small shipping charge is added to items purchased for less than 100 and weighing more 20 lbs. Shipping: domestic shipping is to the lower 48 us. All prices are negotiable...(October 24th, 2017)
• 0722-31-007 Reliance Electric Electrocraft Servo Motor Used (32.7% similar) Item id: e 04: Reliance electric servo motor used manufacturer: manufacturer part number: condition note: is in good working condition, money back guaranteed...(May 16th, 2018)
• 079167-31-ta Reliance Electric 10hp 3-ph (34.4% similar) Bearing: 30BC02JPP30A frame size: 215TY design: b type: phase: 3 Hz: 60 sf: PPS: b2 ratio. Buyer pays for all shipping costs. 3 holding amps reducer: manufacturer: dodge size: 215CG28F18 id: M679489001EG no: ta mtg. Home contact about technology industrial lab test electrical semiconductor Reliance ...(June 16th, 2017)
• 07mn445634g003ba Reliance Electric Duty Master (31.3% similar) Reliance electric duty master a-c 200HP motor 3575 rpm 445TS frame 07MN445634G003BAMOTOR has been rebuilt has some shelf wear please see pictures of tag for all info...(June 9th, 2017)
• 103204-02 Reliance Electric Baldor Phase Motor Hp Rpm (39.7% similar) M: 1725 frame: 56YZ Hz: 60 ph: 3 sear. F: 75 rating: 40C ABM-cont cc: usable at 208VBEARINGS: DE: 6205 ode: 6203ENCL: ops Sn: f sofa PO. Balder Reliance motorcar. No: spec: 35Z194P890G1 hp: 3 volts : 460 amps: 15 code: l dies: b class: FNMA Nome. 3 replaces old Lennon part NUMBERS:51W24 34W47 ...(July 10th, 2018)
• 1152 Reliance Brand New Hp Phase Motor Diameter Shaft (35.5% similar) Please see name plate photo for motor details photos are actual...(July 17th, 2018)