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  3. MARATHON 404THFS18105AN

MARATHON 404THFS18105AN Rvn Ac Motor 404TC 50HP 2800RPM 460V-AC 3PH

404thfs18105an Marathon Rvn W Blue Max Ac Motor 404tc 50hp 2800rpm 460v-ac 3ph

( Brand: Marathon ), ( Manufacturer Part Number: 404THFS18105AN ), ( Part Type: Ac Motor ), ( Model Number: Rvn 404thfs18105an W ), ( Frame: 404tc ), ( Power: 50 Hp ), ( Rpm: 2800 Rpm ), ( Shaft Od: 2.875 In ), ( Voltage: 460 V-ac ), ( Model Line: Blue Max ), ( Phase: 3ph ), ( Reference Sku: 1767544 ), ( Product Condition: Used Excellent )

Review MARATHON Rvn Blue Max Ac Motor 404tc 50hp 2800rpm 460v-ac 3ph

The **Marathon 404THFS18105AN RVN AC Motor (Model 404TC, 50 HP, 2800 RPM, 460V AC, 3-Phase)** is a robust, high-performance electric motor engineered for demanding industrial applications where reliability, efficiency, and durability are paramount. Part of Marathon s **RVN series**, this motor combines advanced design features with superior construction to deliver consistent performance in environments ranging from manufacturing plants and processing facilities to commercial HVAC systems and material handling equipment. With a **50 horsepower (HP) output**, it provides ample torque and speed (2800 RPM) to drive heavy-duty machinery, ensuring optimal productivity without compromising energy efficiency. Built for **460V AC, three-phase power**, this motor is compatible with standard industrial electrical systems, offering seamless integration into existing infrastructure while adhering to strict NEMA and UL safety standards.

The **404TC frame size** a versatile and widely used configuration balances compactness with substantial power delivery, making it ideal for applications where space is a consideration but performance cannot be sacrificed. Its **RVN (Reliability Value Network) technology** incorporates precision-engineered components, including high-grade steel laminations and optimized air gap design, to minimize energy loss and maximize operational efficiency. The motor s **closed, fan-cooled (TC) enclosure** ensures protection against dust, moisture, and contaminants, while the integrated **axial fan** promotes effective heat dissipation, extending the motor s lifespan and reducing maintenance requirements. Additionally, the **NEMA Premium efficiency rating** certifies that this motor operates at peak performance levels, lowering energy consumption and operational costs over its service life.

Designed with **long-term reliability in mind**, the 404THFS18105AN features **Marathon s advanced bearing system**, including sealed ball bearings that reduce friction and wear, as well as a **vibration-dampening rotor** to enhance stability and minimize mechanical stress. The motor s **class F insulation** provides superior thermal resistance, allowing it to operate continuously under high-load conditions without overheating. For added convenience and safety, it includes **built-in thermal protection** and **low-voltage release**, ensuring automatic shutdown in the event of abnormal operating conditions. Whether deployed in conveyor systems, pumps, compressors, or other critical machinery, this motor exemplifies Marathon s commitment to delivering a product that is not only powerful and efficient but also built to withstand the rigors of industrial environments for years to come.

### **Pros and Cons of buying a Marathon 404THFS18105AN (RVN AC Motor 50HP, 2800 RPM, 460V, 3-Phase)**

#### **Pros**

1. **High Efficiency and Reliability** Marathon is a well-known brand in industrial motors, offering robust construction and long-term durability. This motor is designed for continuous duty (RVN class), making it suitable for heavy industrial applications where reliability is critical.

2. **Energy Efficiency** The motor likely meets or exceeds NEMA Premium efficiency standards, reducing energy consumption and operational costs over time. This can lead to significant savings in electricity bills, especially in large-scale industrial operations.

3. **Premium Build Quality** Marathon motors are built with high-grade materials, including high-strength steel laminations and corrosion-resistant coatings, ensuring longevity even in harsh environments (e.g., dust, moisture, or temperature fluctuations).

4. **Compatibility with Industrial Systems** The 460V, 3-phase, 2800 RPM specification is standard for many industrial applications, including pumps, compressors, conveyors, and HVAC systems. This makes it easy to integrate into existing setups without requiring significant modifications.

5. **Low Maintenance Requirements** The sealed design and robust construction minimize the need for frequent maintenance, reducing downtime and labor costs. Bearings and windings are typically designed for extended service life.

6. **Warranty and Support** Marathon offers standard warranties (often 1 2 years) and access to technical support, spare parts, and service networks, which can be valuable for troubleshooting or repairs.

7. **Versatility** The 50HP rating provides sufficient power for a wide range of applications, from medium-duty machinery to larger industrial processes, offering flexibility for future upgrades or different workloads.

8. **Noise and Vibration Control** Modern industrial motors like this one are designed to operate with minimal noise and vibration, contributing to a smoother workflow and reduced wear on connected equipment.

9. **Environmental Compliance** Many Marathon motors comply with environmental regulations (e.g., EPA, UL, CSA), ensuring they can be used in facilities with strict compliance requirements.

10. **Resale Value** Due to the brand s reputation, a well-maintained Marathon motor retains value better than generic or lower-quality alternatives, making it a sound long-term investment.

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#### **Cons**

1. **Higher Upfront Cost** Compared to generic or lower-end motors, Marathon motors are more expensive. The premium price may be a barrier for small businesses or startups with limited budgets.

2. **Potential Overkill for Light-Duty Use** If the motor is significantly more powerful than required for the application (e.g., used in a system where 30HP would suffice), the excess capacity may lead to inefficiencies or higher initial costs without justifiable benefits.

3. **Specialized Installation Requirements** Some industrial motors require professional installation, including proper alignment, grounding, and enclosure sealing. Improper installation can void warranties or reduce performance.

4. **Limited Customization** Unlike some OEM motors, Marathon motors may not offer extensive customization options for specific voltage, frequency, or mounting configurations, which could be a drawback for niche applications.

5. **Weight and Space Considerations** Industrial motors are heavy and bulky. The 50HP Marathon motor may require reinforced mounting surfaces or additional structural support, which could complicate installation in space-constrained environments.

6. **Dependence on Brand Support** While Marathon has strong support, reliance on a single brand for repairs or replacements could be a risk if the local dealer network is limited or slow to respond.

7. **Potential for Overheating in Poor Ventilation** If the motor is installed in an environment with inadequate airflow or cooling, it may overheat, especially under heavy loads. Proper ventilation and enclosure selection are critical.

8. **Longer Lead Times for Replacements** In some cases, finding exact replacements or spare parts for older Marathon models may take longer than for more common motors, potentially causing downtime.

9. **Energy Costs During Startup** Large motors like this one may draw high inrush current during startup, which could impact electrical systems or require additional protective measures (e.g., soft starters).

10. **Resale Market Limitations** While Marathon motors hold value, selling a used one may still be challenging compared to more universally recognized brands, depending on the buyer s market.

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### **Conclusion**

The **Marathon 404THFS18105AN (50HP, 460V, 3-phase)** is a high-quality, efficient, and reliable motor well-suited for demanding industrial applications where longevity, energy savings, and low maintenance are priorities. Its premium build and brand reputation make it a strong choice for facilities that cannot afford downtime or inefficiencies. However, the higher cost and potential overcapacity for smaller applications may not justify the purchase for every buyer.

For **large-scale industrial operations, manufacturing plants, or facilities with strict energy efficiency requirements**, this motor is an excellent long-term investment. For **smaller businesses, startups, or applications where cost sensitivity is high**, a more budget-friendly alternative (e.g., a generic NEMA Premium motor) might be preferable, provided it meets the performance and reliability needs.

### **Recommendation**

- **Buy this motor if:**

- You need a **durable, energy-efficient motor** for continuous heavy-duty use.

- Your application requires **reliable performance** with minimal maintenance.

- You operate in an **industrial environment** where downtime is costly.

- You prioritize **long-term cost savings** through efficiency and longevity.

- **Consider alternatives if:**

- Your budget is **strictly limited**, and a lower-cost motor meets your performance needs.

- The motor s **50HP rating is excessive** for your application, leading to unnecessary energy waste.

- You require **highly customized specifications** not offered by Marathon.

- You are in a **market with limited dealer support** for Marathon motors.

Ultimately, weigh the **upfront cost against long-term operational savings** and ensure the motor aligns with your specific application requirements. If the investment fits your budget and needs, the Marathon motor is a **strong, reliable choice**. Otherwise, a well-researched alternative may offer better value.

Details:

Motor Starters. Solenoid Valves. Motor Drives. Model Line:BLUE MAX.

Circuit Breakers. Model Number:RVN 404THFS18105AN W. Solenoid Coils.

part #: 404thfs18105an price

  • $3500.00

specifications oelemot:

  • brand: Marathon
  • mpn: 404thfs18105an
  • part type: Ac Motor
  • model number: Rvn 404thfs18105an W
  • frame: 404tc
  • power: 50 Hp
  • rpm: 2800 Rpm
  • shaft od: 2.875 In
  • voltage: 460 V-ac
  • model line: Blue Max
  • phase: 3ph
  • reference sku: 1767544
  • product condition: Used Excellent

payments oelemot:

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

general oelemot:

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

shipping oelemot:

seller oelemot:

  • rating: 100.0%
  • city: Delta, Ohio
  • # reviews: 128670

returns oelemot:

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

offer oelemot:

  • availability: In Stock
  • options: Ship-to-home
  • sold: 0
  • best offers: True
  • started: May 15, 2026
  • quantity: 1
part type: ac motor, model number: rvn 404thfs18105an w, frame: 404tc, power: 50 hp, rpm: 2800 rpm, shaft od: 2.875 in, voltage: 460 v-ac, model line: blue max, phase: 3ph, reference sku: 1767544, product condition: used excellent,
category: business & industrial > industrial automation motion controls > electric > general purpose, sku: 22072501116810008,
Marathon 404THFS18105AN Is Similar To:
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1 offer $3500.00 USD
  • Used. Offer #1 priced at $3500.00 + $Calculated shipping estimate = $3500.00* total. Solenoid Coils. Model Number:RVN W.+$Calculated shipping

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