CENTURY 6-311687-01 Electric Squirrel Cage Induction Motor SC-215LGA 5HP 3-PHASE 220/440V 1735RPM

( Brand: Century ), ( Manufacturer Part Number: 6-311687-01 ), ( Model: SC-215LGA ), ( Part Type: 5hp Cage Motor ), ( Actual Rated Input Voltage: 220/440v ), ( Rated/full-load Torque: 15lb ), ( Full Load Amps: 13.8 ), ( Nema Design Letter: Design B ), ( Ac Frequency Rating: 60 Hz ), ( Enclosure Type: Odp ), ( Base Rpm: 1735 ), ( Shaft Type: Keyed ), ( Ac Motor Type: Induction/asynchronous ), ( Shaft Diameter: 1 3/8 In ), ( Insulation Class: B ), ( Mounting Type: Foot-mounted ), ( California Prop 65 Warning: Yes ), ( Reversible/non-reversible: Reversible ), ( Current Type: Ac ), ( Unit Type: Unit ), ( Service Factor: 1.15 ), ( Nominal Rated Input Voltage: 440 V, 220 V ), ( Country Of Origin: United States )

Review CENTURY Electric 5hp Squirrel Cage Induction Motor 3-phase 220/440v 1735rpm

The **Century 6-311687-01 Electric 5 Horsepower Squirrel Cage Induction Motor** is a robust, high-performance three-phase electric motor designed for demanding industrial applications where reliability, efficiency, and durability are paramount. Engineered with precision, this motor delivers a consistent output of **5 horsepower (3.73 kW)** at a nominal speed of **1735 revolutions per minute (RPM)**, making it ideal for a wide range of machinery, including conveyors, pumps, compressors, fans, and industrial processing equipment. Built with a **squirrel cage induction design**, this motor ensures smooth, self-starting operation without the need for external control components, offering both simplicity and operational efficiency.

Constructed with a **220/440-volt three-phase AC input**, the Century 6-311687-01 is versatile enough to integrate seamlessly into existing electrical systems, whether in commercial, agricultural, or light industrial settings. Its **TEFC (Totally Enclosed Fan-Cooled)** construction provides superior protection against dust, moisture, and corrosive environments, ensuring prolonged service life even in harsh operating conditions. The motor s **1735 RPM** speed rating strikes a balance between torque and efficiency, making it well-suited for applications requiring moderate to high rotational speeds without excessive mechanical stress.

The robust **cast iron end shields and rotor assembly** contribute to the motor s durability, while the **squirrel cage rotor** eliminates the need for brushes or slip rings, reducing maintenance requirements and minimizing the risk of wear-related failures. With a **frame size 1735** (NEMA size 173T), this motor offers a compact yet sturdy footprint, allowing for flexible installation in tight spaces while maintaining optimal performance. Whether powering a conveyor system in a manufacturing plant, driving a water pump in an agricultural setting, or operating a ventilation system in a commercial facility, the Century 6-311687-01 delivers dependable power with minimal energy loss, contributing to both operational efficiency and cost savings.

Backed by Century s reputation for quality engineering, this motor is built to withstand continuous duty cycles, offering a **long service life** with minimal downtime. Its **high-efficiency design** ensures reduced energy consumption, aligning with modern sustainability goals while maintaining peak performance. Whether integrated into new equipment or retrofitted into existing systems, the Century 6-311687-01 stands as a reliable workhorse, combining strength, efficiency, and ease of use to meet the demands of industrial and commercial applications with confidence.

### **Pros and Cons of buying a Century 6-311687-01 Electric 5HP Squirrel Cage Induction Motor (3-Phase, 220/440V, 215Lb, 1735 RPM)**

1. **Reliable Performance** Squirrel cage induction motors are known for their durability and long operational lifespan, especially in industrial and commercial applications. This motor is designed for continuous duty, making it suitable for heavy-duty tasks.

2. **Energy Efficiency** Modern induction motors, including this model, are optimized for better efficiency compared to older designs. The 5HP rating suggests it is well-suited for applications requiring moderate power without excessive energy waste.

3. **Versatile Voltage Range (220/440V)** The dual-voltage capability allows flexibility in installation depending on local electrical infrastructure, reducing the need for additional voltage conversion equipment.

4. **Standardized Design** As a widely available motor (likely from a reputable brand like Century), it is easy to find replacement parts, maintenance services, and technical support. This reduces downtime and repair costs over the motor s lifespan.

5. **High RPM (1735 RPM)** The relatively high speed (compared to some industrial motors) makes it suitable for applications requiring faster mechanical output, such as pumps, compressors, or conveyor systems.

6. **Lightweight for Its Power (215 lbs)** At 215 pounds, it is relatively compact for a 5HP motor, which can simplify installation and reduce structural requirements in the application environment.

7. **Low Maintenance** Induction motors generally require minimal upkeep compared to motors with brushes or complex electronic controls. This reduces operational costs over time.

8. **Compatibility with Variable Frequency Drives (VFDs)** If your application requires speed control, this motor can often be paired with a VFD, though compatibility should be verified with the manufacturer.

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1. **Limited Speed Control Without Additional Equipment** Induction motors inherently lack precise speed control without a VFD or other external devices, which may be a drawback for applications requiring variable speeds.

2. **Starting Current Draw** Induction motors can draw high inrush current during startup, which may require additional protection (e.g., star-delta starters or soft starters) in sensitive electrical systems.

3. **Sensitivity to Voltage Fluctuations** Performance and efficiency can degrade if the supply voltage deviates significantly from the rated 220/440V. Unstable power sources may shorten the motor s lifespan.

4. **No-Brake Design** This motor does not include a built-in braking mechanism, meaning external braking systems (e.g., regenerative braking or mechanical brakes) may be needed for applications requiring quick stops.

5. **Potential for Overheating in Heavy Loads** While designed for continuous duty, prolonged operation at or near maximum load without adequate cooling can lead to overheating, reducing efficiency and lifespan.

6. **Noise and Vibration** Induction motors can generate some noise and vibration, particularly if the application involves misalignment or unbalanced loads. This may require additional damping or isolation measures.

7. **Dependence on Three-Phase Power** This motor requires a three-phase electrical supply, which may not be available in all locations. Single-phase applications would need a converter or alternative motor.

8. **Limited Customization** Unlike specialized motors (e.g., explosion-proof or hermetically sealed), this standard motor may not meet niche environmental or safety requirements without modifications.

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### **Conclusion and Recommendation**

The **Century 6-311687-01 5HP squirrel cage induction motor** is a **solid, cost-effective choice** for applications requiring reliable, medium-power three-phase motor performance. Its **durability, efficiency, and ease of maintenance** make it ideal for industrial, commercial, or agricultural use where **steady power output and longevity** are priorities.

- Pumps (water, chemical, or irrigation)

- Compressors (air or refrigeration)

- Conveyor systems

- Fans and blowers

- Light machinery (e.g., woodworking tools, packaging equipment)

- You need **precise speed control** (consider a motor with VFD compatibility or a DC motor).

- Your application requires **explosion-proof or waterproof** ratings (look for NEMA 4X or IP-rated motors).

- The electrical system is **single-phase only** (a single-phase motor or converter would be needed).

- **Low noise or vibration** is critical (a premium or specially designed motor may be better).

If your application aligns with the motor s specifications and you prioritize **reliability, ease of maintenance, and cost efficiency**, this motor is a **strong purchase**. Ensure your electrical system can support **220/440V three-phase power** and that the motor is properly sized for your load. For long-term savings, pair it with **proper protection devices** (e.g., thermal overload relays) to extend its lifespan. If budget allows, consider a **higher-efficiency model** (e.g., IE3 or IE4 rated) for even better energy savings.

Details:

This induction motor has a keyed shaft diameter of 1 3/8 inches and is foot-mounted, suitable for various industrial automation motion control applications. With a service factor of 1.15 and insulation class B, this reliable motor is reversible made in the USA. It operates on a 60 Hz AC frequency with 220/440V voltage input, featuring NEMA Design Letter B.

part #: 631168701 prices

• $200.00-$262.50

specifications oelemot:

• brand: Century
• mpn: 6-311687-01
• model: Sc-215lga
• part type: 5hp Cage Motor
• actual rated input voltage: 220/440v
• rated/full-load torque: 15lb
• full load amps: 13.8
• nema design letter: Design B
• ac frequency rating: 60 Hz
• enclosure type: Odp
• base rpm: 1735
• shaft type: Keyed
• ac motor type: Induction/asynchronous
• shaft diameter: 1 3/8 In
• insulation class: B
• mounting type: Foot-mounted
• california prop 65 warning: Yes
• reversible/non-reversible: Reversible
• current type: Ac
• unit type: Unit
• service factor: 1.15
• nominal rated input voltage: 440 V, 220 V
• country of origin: United States

shipping oelemot:

• class: Standard
• transit: 4-10 Days
• type: Calculated
• cost: $501.95
• service: UPS Ground
• carrier: UPS

returns oelemot:

• policy: No Returns

general oelemot:

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

offer oelemot:

• best offers: True
• options: Ship-to-home
• availability: In Stock
• quantity: 1
• sold: 0
• started: March 6, 2026

seller oelemot:

• rating: 100.0%
• # reviews: 11
• city: Sycamore, Illinois

payments oelemot:

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

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