GENERAL ELECTRIC 5K43MG6490 Ge Rpm Ac Motor K256 1HP 1725 208-230/460 56C

( Brand: General Electric ), ( Manufacturer Part Number: 5K43MG6490 ), ( Model: 5K43MG6490 K-256 ), ( Part Type: Ac Motor ), ( Current Type: Ac ), ( Service Factor: 1.00 ), ( Ac Phase: Three Phase ), ( Country Of Origin: United States )

Review GENERAL ELECTRIC Ge 1hp Rpm Ac Motor 208-230/460 56c Ph

The **GE 5K43MG6490 K256 1 Horsepower AC Motor** is a robust, high-performance electric motor designed to deliver reliable and efficient power for a wide range of industrial, commercial, and mechanical applications. Part of General Electric s trusted line of premium electric motors, this **1HP (746-watt) motor** operates at a nominal speed of **1725 RPM**, making it ideal for applications requiring moderate torque and consistent rotational speed. Built with GE s signature engineering precision, this motor features a **squirrel-cage induction design**, ensuring durability, low maintenance, and long-term operational reliability. Its **NEMA Premium efficiency rating** (or equivalent) guarantees superior energy savings compared to standard motors, reducing operational costs while minimizing environmental impact.

This motor is engineered to operate seamlessly across **dual-voltage configurations**, accepting **208-230V or 460V AC power**, providing flexibility for integration into various electrical systems without requiring additional voltage conversion. The **56C temperature rise** classification ensures robust thermal performance, allowing the motor to handle continuous operation under standard industrial conditions without overheating. Constructed with high-quality materials, including a **cast aluminum or die-cast end shields** and a **stainless steel or heavy-duty steel housing**, this motor is built to withstand harsh environments, including exposure to dust, moisture, and vibration, making it suitable for applications in manufacturing plants, HVAC systems, conveyor belts, pumps, compressors, and other mechanical drives.

The **K256 frame size** (NEMA 56) provides a compact yet sturdy footprint, allowing for easy installation in tight spaces while maintaining structural integrity. The motor s **bearings are precision-engineered** for smooth operation and extended service life, often featuring sealed or shielded designs to protect against contamination. Additionally, the **balloon or drip-proof (DP) enclosure** (depending on the specific variant) offers protection against accidental splashes and falling debris, enhancing safety in industrial settings. With **low noise and vibration levels**, this motor ensures quieter operation, reducing wear on connected equipment and improving overall system efficiency.

GE s reputation for innovation and quality is reflected in the **robust terminal box design**, which accommodates standard wiring configurations while providing easy access for maintenance and troubleshooting. The motor s **high starting torque** and **efficient power factor** further contribute to its versatility, making it a dependable choice for applications where consistent performance is critical. Whether used in a small workshop, a commercial facility, or an industrial automation system, the **GE 5K43MG6490 K256 1HP AC Motor** delivers the reliability, efficiency, and durability expected from a leading manufacturer, ensuring long-term productivity and cost-effectiveness for businesses of all sizes.

### **Pros and Cons of buying a GE 5K43MG6490 (1HP, 1725 RPM, AC Motor, 208-230/460V, 56C)**

1. **Reliable Brand Reputation** GE (now part of Emerson) is a well-established manufacturer with decades of experience in industrial motors. Their products are known for durability and performance in commercial and light industrial applications.

2. **Dual Voltage Capability (208-230V / 460V)** The motor can operate on both standard commercial voltages (208/230V) and higher industrial voltages (460V), making it versatile for different electrical setups without requiring a separate model.

3. **Standard NEMA Premium Efficiency** The motor likely meets or exceeds NEMA Premium efficiency standards, meaning it consumes less energy while maintaining performance. This can lead to lower operating costs over time.

4. **Common Frame Size (56C)** The 56C frame is widely used in industrial applications, meaning replacement parts, bearings, and accessories are readily available. This reduces downtime and maintenance costs.

5. **1725 RPM Speed** This speed is standard for many applications (e.g., fans, pumps, conveyors), making it a good fit for general-purpose use without requiring a gearbox or speed reducer.

6. **Compact and Lightweight (1HP)** At 1 horsepower, this motor is suitable for smaller machinery, reducing installation complexity and space requirements.

7. **Compatibility with Common Controls** The motor is designed to work with standard AC motor starters, variable frequency drives (VFDs), and control systems, offering flexibility in automation setups.

8. **Long Lifespan with Proper Maintenance** GE motors are built to last for years with routine maintenance (lubrication, alignment checks, and insulation testing), making them a cost-effective long-term investment.

9. **Energy Savings** Premium efficiency models reduce electricity consumption, which can be particularly beneficial in facilities with high energy costs or sustainability goals.

10. **Warranty Coverage** GE motors typically come with a manufacturer s warranty (often 1 3 years), providing some protection against defects in materials or workmanship.

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1. **Potential for Higher Upfront Cost** While not excessively expensive for a 1HP motor, it may be more costly than a basic, non-premium efficiency motor from a lesser-known brand. However, the long-term savings in energy and maintenance often justify the cost.

2. **Limited Customization** This is a standard off-the-shelf motor. If your application requires specialized features (e.g., explosion-proof, high-altitude performance, or specific mounting options), you may need to source a different model.

3. **Maintenance Requirements** Like all motors, it requires periodic maintenance (bearing lubrication, shaft alignment, and insulation resistance testing) to prevent premature failure. Neglecting maintenance can lead to costly repairs.

4. **Compatibility with Older Systems** If your facility uses outdated control systems or wiring, you may need additional components (e.g., a VFD or soft starter) to integrate the motor smoothly, adding to the total cost.

5. **Potential for Counterfeit or Used Motors** If purchasing from a third-party seller (e.g., eBay, Facebook Marketplace), there is a risk of buying a refurbished, damaged, or counterfeit motor. Always verify the seller s reputation and request a certificate of authenticity or test report.

6. **Noise and Vibration** Some users report that GE motors (like many industrial motors) can produce noticeable noise and vibration, especially if not properly aligned or if the load is mismatched. This may require additional dampening or balancing.

7. **Limited Availability of Spare Parts** While the 56C frame is common, older models may have discontinued parts. Always check with the manufacturer or distributor before purchasing to ensure parts availability.

8. **Energy Costs During Startup** If the motor is started directly (without a soft starter or VFD), it may draw a high inrush current, potentially causing voltage dips in the electrical system. This is less of an issue with 1HP motors but worth considering in sensitive applications.

9. **Environmental Sensitivity** Motors are sensitive to dust, moisture, and extreme temperatures. If installed in a harsh environment (e.g., outdoor, high-dust, or corrosive areas), additional protection (e.g., enclosures, filters) may be needed.

10. **Potential for Overloading** If the motor is used in an application where the load exceeds its rated capacity (1HP), it will overheat and fail prematurely. Always ensure the motor is correctly sized for the intended task.

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The **GE 5K43MG6490 (1HP, 1725 RPM, 208-230/460V, 56C)** is a **high-quality, versatile, and energy-efficient motor** well-suited for general-purpose industrial, commercial, or light manufacturing applications. Its dual-voltage capability, standard frame size, and premium efficiency make it a practical choice for many users. However, the decision to purchase depends on your specific needs:

- You need a reliable, energy-efficient motor for standard applications (fans, pumps, conveyors).

- Your facility has either 208/230V or 460V electrical systems.

- You prioritize long-term durability and lower operating costs.

- You can source genuine parts and perform basic maintenance.

- You require specialized features (e.g., explosion-proof, high-altitude, or custom mounting).

- Your budget is extremely tight, and you can find a similarly rated motor from a trusted brand at a lower cost.

- The motor will be used in an extremely harsh environment without additional protection.

- You suspect the seller may be offering a used or counterfeit motor (always verify with documentation).

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- You are confident in the seller s authenticity (preferably from a reputable distributor or manufacturer s website).

- Your application matches the motor s specifications (1HP, 1725 RPM, voltage compatibility).

- You are prepared for basic maintenance to ensure longevity.

1. **Other Premium Efficiency Motors** Brands like **Weg, ABB, or Siemens** offer similar high-quality motors with comparable warranties and efficiency.

2. **Used/Refurbished Motors** If cost is a major concern, a **certified refurbished GE motor** from a trusted source can be a cost-effective alternative, provided it comes with a warranty and performance test.

3. **Smaller or Larger Horsepower Motors** If your application is borderline for 1HP, consider a **1.5HP motor** for better headroom or a **0.75HP motor** if the load is lighter.

4. **VFD-Compatible Motors** If you plan to use a variable frequency drive, ensure the motor is **VFD-rated** to prevent premature failure from excessive starting currents.

**Final Verdict:** The **GE 5K43MG6490** is a **solid, well-rounded choice** for most standard applications where reliability and efficiency are priorities. With proper installation and maintenance, it will provide years of service. Always verify the motor s condition and compatibility before purchase to avoid issues.

Details:

K256, HP: 1, 3 Phase 60 Hz, Volt: 208-230/460, 1725 RPM, Frame: 56C, Service Factor: 1.10 model: 5K43MG6490. AC Industrial Motor.

part #: 5k43mg6490 prices

• $137.99-$154.99

specifications oelemot:

• brand: General Electric
• mpn: 5k43mg6490
• model: 5k43mg6490 K-256
• part type: Ac Motor
• current type: Ac
• service factor: 1.00
• ac phase: Three Phase
• country of origin: United States

payments oelemot:

• other
• credit card: Mastercard
• wallet: Apple-pay

general oelemot:

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

offer oelemot:

• started: June 2, 2026
• availability: In Stock
• best offers: True
• options: Ship-to-home
• sold: 0
• quantity: 1

returns oelemot:

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

seller oelemot:

• rating: 100.0%
• # reviews: 450
• city: Chattanooga, Tennessee

shipping oelemot:

• carrier: UPS
• service: UPS Ground, UPS 2nd Day Air, UPS Next Day Air
• transit: 3-7 Days
• cost: $35.34
• class: Standard, Expedited, One-day
• type: Calculated

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