LOUIS ALLIS 8J47845001 Pacemaker Ac Motor C0G4B 405TS 125HP 1780RPM 460V-AC 3PH

( Brand: Louis Allis ), ( Manufacturer Part Number: 8J47845001 ), ( Part Type: Ac Motor ), ( Model Number: 8j47845001 C0g4b ), ( Frame: 405ts ), ( Power: 125 Hp ), ( Rpm: 1780 Rpm ), ( Shaft Od: 2.125 In ), ( Voltage: 460 V-ac ), ( Phase: 3ph ), ( Model Line: Pacemaker ), ( Reference Sku: 1754212 ), ( Product Condition: Used Excellent )

Review LOUIS ALLIS Pacemaker Ac Motor 125hp 1780rpm 460v-ac 3ph

The **Louis Allis 8J47845001 C0G4B** is a robust, high-performance **405T Series** AC induction motor designed for demanding industrial applications requiring reliability, efficiency, and durability. Engineered by Louis Allis, a trusted name in electric motor manufacturing, this **125 horsepower (hp)** motor delivers consistent power output at a rated speed of **1,780 revolutions per minute (RPM)**, making it ideal for heavy-duty machinery such as conveyors, pumps, compressors, and industrial fans. Built with a **460-volt, three-phase (3ph) AC** electrical system, this motor operates seamlessly within standard industrial power grids, ensuring compatibility with most factory setups while maintaining optimal performance under continuous load conditions.

The **8J47845001 C0G4B** features a **pacemaker** design, which enhances starting torque and reduces inrush current, making it particularly well-suited for applications requiring frequent starts or variable loads. This motor is constructed with a **Totally Enclosed Fan-Cooled (TEFC)** enclosure, providing superior protection against dust, moisture, and corrosive environments while maintaining efficient heat dissipation through an integrated cooling fan. The robust **405T frame** ensures structural integrity, supporting high torque demands and minimizing mechanical wear over extended operational periods.

Inside, the motor incorporates **high-quality copper windings** and a **high-efficiency core**, reducing energy consumption while maximizing power delivery. The **bearing assembly** is reinforced with sealed, grease-filled ball bearings, ensuring smooth operation and extended service life even under harsh conditions. Additionally, the motor s **NEMA Premium efficiency rating** confirms its adherence to strict energy-saving standards, helping industries reduce operational costs while maintaining peak performance.

With a **C0G4B** designation, this motor is equipped with a **standard NEMA B speed torque curve**, offering balanced performance across a wide range of applications. Its **405T frame size** provides ample space for internal components, contributing to longevity and ease of maintenance. Whether integrated into a manufacturing plant, mining operation, or large-scale processing facility, the **Louis Allis 8J47845001 C0G4B** delivers dependable power, operational efficiency, and long-term reliability making it a premium choice for industries where performance and durability are non-negotiable.

### **Pros and Cons of buying a Louis Allis 8J47845001 C0G4B AC Motor (405TS, 125HP, 1780 RPM, 460V, 3-Phase)**

1. **High Reliability and Durability** Louis Allis (a brand under Emerson Electric) is known for manufacturing robust, long-lasting industrial motors. This model is designed for heavy-duty applications, making it suitable for continuous operation in manufacturing, pumping, or HVAC systems.

2. **Energy Efficiency** The motor likely meets or exceeds NEMA Premium efficiency standards, reducing energy consumption and operational costs over time. The 125HP rating suggests it is optimized for performance without excessive waste.

3. **Compatibility with Existing Systems** A 460V, 3-phase motor is standard in many industrial facilities, meaning it can be easily integrated into existing electrical setups without requiring significant modifications.

4. **Maintenance-Friendly Design** AC motors like this one typically require less maintenance than DC motors or variable-speed drives. They are also easier to repair or replace individual components (e.g., bearings, windings) compared to more complex systems.

5. **Wide Availability of Parts and Service** As a well-established brand, replacement parts, service manuals, and local technicians are readily available, reducing downtime in case of failures.

6. **Variable Speed Capability (if applicable)** Some Louis Allis motors (including this model) can be paired with variable frequency drives (VFDs) for adjustable speed control, improving process flexibility in applications like conveyors or pumps.

7. **Warranty and Support** Emerson (the parent company) offers warranties and technical support, providing peace of mind for large investments in industrial equipment.

8. **Proven Performance in Harsh Environments** The motor s construction suggests it can handle dust, moisture, or temperature fluctuations common in industrial settings, depending on the enclosure type (e.g., NEMA 12, 4X, or IP-rated).

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1. **High Upfront Cost** Industrial motors, especially high-horsepower units like this one, are expensive. The price may be prohibitive for small businesses or startups with limited budgets.

2. **Potential for Overkill** If the application does not require continuous full-load operation (e.g., intermittent use), a slightly smaller motor (e.g., 100HP) could suffice, reducing costs without sacrificing performance.

3. **Space and Installation Requirements** A 125HP motor is physically large and may require dedicated space, proper ventilation, and structural support. Installation costs (including wiring, mounting, and alignment) should be factored in.

4. **Energy Costs** While efficient, a 125HP motor will consume significant power. Facilities with high electricity rates may see increased operational expenses, especially if the motor runs for extended periods.

5. **Dependence on Skilled Labor for Installation and Maintenance** Improper installation (e.g., misalignment, incorrect wiring) can lead to premature failure or reduced efficiency. Regular maintenance (e.g., lubrication, bearing checks) requires trained personnel.

6. **Potential for Obsolescence** Industrial standards evolve, and newer motors may incorporate advanced features like digital monitoring, predictive maintenance, or higher efficiency ratings. While this motor is reliable, it may lack modern optimizations.

7. **Noise and Vibration** Large AC motors can generate noise and vibration, which may require additional soundproofing or isolation in sensitive environments.

8. **Compatibility Issues with Older Systems** If the facility has outdated electrical infrastructure (e.g., poor grounding, inadequate breakers), the motor may not perform optimally or could pose safety risks.

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The **Louis Allis 8J47845001 C0G4B AC Motor (125HP, 460V, 3-phase)** is a **high-quality, durable, and efficient** choice for demanding industrial applications where reliability and performance are critical. Its strengths lie in **long-term dependability, energy savings, and ease of maintenance**, making it ideal for manufacturing, pumping, or HVAC systems where downtime is costly.

However, the **high cost, space requirements, and potential over-specification** for lighter-duty applications may make it less suitable for smaller operations or budget-conscious buyers. Businesses should carefully assess their **load requirements, operational environment, and long-term cost-of-ownership** before purchasing.

- You need a **highly reliable, long-lasting motor** for continuous heavy-duty use.

- Your facility has **proper electrical infrastructure** to support a 460V, 3-phase motor.

- You prioritize **energy efficiency and low maintenance** over initial cost.

- The motor is **critical to your production process**, and downtime would be expensive.

- Your application requires **variable speed control** evaluate pairing it with a VFD for flexibility.

- The motor is **overkill** for your needs opt for a slightly smaller HP rating to reduce costs.

- You have **space or budget constraints** explore used/refurbished motors or less powerful models.

- You need **advanced monitoring** look for motors with built-in sensors or IoT compatibility.

- **Consult an electrician or motor specialist** to confirm compatibility with your system.

- **Compare quotes** from multiple suppliers (new vs. refurbished vs. used).

- **Check warranty and local service availability** to ensure long-term support.

- **Assess total cost of ownership** (energy savings vs. upfront cost) over the motor s expected lifespan (typically 15 25 years).

For most **large-scale industrial applications**, this motor is a **strong, well-supported choice**. However, smaller operations or those with tight budgets may find a **slightly lower HP model or a different brand** to be a more cost-effective alternative.

Details:

Motor Starters. Model Line:PACEMAKER. Motor Drives. Model Number:8J47845001 C0G4B.

Solenoid Coils. Circuit Breakers. Solenoid Valves.

part #: 8j47845001 prices

• $370.30-$1800.00

specifications oelemot:

• brand: Louis Allis
• mpn: 8j47845001
• part type: Ac Motor
• model number: 8j47845001 C0g4b
• frame: 405ts
• power: 125 Hp
• rpm: 1780 Rpm
• shaft od: 2.125 In
• voltage: 460 V-ac
• phase: 3ph
• model line: Pacemaker
• reference sku: 1754212
• product condition: Used Excellent

offer oelemot:

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

seller oelemot:

• rating: 100.0%
• city: Delta, Ohio
• # reviews: 125936

payments oelemot:

• other
• wallet: Paypal
• credit card: Discover

general oelemot:

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

shipping oelemot:

returns oelemot:

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

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