STELLAR SR55-477 Phase Start Amplifier 477-AMP 400 480V 4773

( Brand: Stellar ), ( Model: SR55-477 477 ), ( Part Type: Start Hp 480v Amplifier ), ( Maximum Load: 400 Hp ), ( Input Voltage: 200-480v ), ( Manufacturer Part Number: SR55-477 )

Review STELLAR 4773 Phase 400 Hp At 480v Soft Start

The SR55-477 is a high-performance, 400 horsepower, 480 volt, 477 amp, three-phase squirrel cage induction motor designed for heavy-duty industrial applications. This motor is part of the Phase 4 series, delivering exceptional efficiency and reliability.

The SR55-477 motor features a cast iron frame and a balanced rotor for reduced vibration and improved stability. Its squirrel cage design offers self-starting capability and robustness, making it suitable for continuous operation in demanding environments.

The motor's 400 horsepower rating is achieved through its large, high-power stator windings and robust rotor construction. These components work together to deliver impressive torque and power, enabling the motor to handle heavy loads with ease.

The SR55-477 motor operates on a three-phase electrical supply, ensuring smooth and efficient power delivery. Its 480 volt rating allows it to handle high power demands while maintaining a reasonable current draw, reducing the need for extensive electrical infrastructure.

The motor's 477 amp current draw is a reflection of its high power output and efficient design. This amperage level is typical for motors of this size and power rating, allowing for standard industrial wiring and electrical systems to accommodate the motor's power requirements.

The SR55-477 motor is designed with a start winding, enabling it to start under load without the need for additional starting components. This simplifies the motor's installation process and reduces the overall cost of the system.

Overall, the SR55-477 motor is a powerful and reliable industrial motor, well-suited for applications that require high power output and efficient operation. Its robust design, combined with its impressive power capabilities, makes it a top choice for heavy-duty industrial applications.

The SR55-477 motor is a 400 HP, 480V, 477 Amp, 60 Hz, 5-pole, squirrel cage induction motor with a NEMA design B frame. Here are some potential pros and cons of buying this motor:

1. High power output: With a power rating of 400 HP, this motor can handle heavy loads and power demanding applications.

2. Industrial-grade construction: The motor's robust design and materials make it suitable for continuous operation in harsh industrial environments.

3. Energy efficient: The motor is designed to operate efficiently, which can help reduce energy costs over time.

4. Easy to maintain: Induction motors like the SR55-477 are known for their simplicity and ease of maintenance.

5. Wide range of applications: This motor can be used in a variety of industries, including oil and gas, mining, manufacturing, and more.

1. High initial cost: The SR55-477 motor's high power output and industrial-grade construction come with a high price tag.

2. Large size and weight: Due to its power output and size, this motor may require substantial space and support structures.

3. Limited speed control options: Induction motors do not have the ability to vary speed as easily as other motor types, which may limit their use in certain applications.

4. Potential for harm: The high voltage and current of this motor can be dangerous if not handled properly, so it requires qualified personnel for installation and maintenance.

The SR55-477 motor is a high-performance, industrial-grade motor that can handle heavy loads and power demanding applications. Its robust design and energy efficiency make it a popular choice for industries such as oil and gas, mining, and manufacturing. However, its high initial cost, large size and weight, limited speed control options, and potential danger make it a significant investment that requires careful consideration and qualified personnel for installation and maintenance.

If you require a motor with a high power output and industrial-grade construction, the SR55-477 motor may be a suitable option for you. However, it is important to consider the costs, space requirements, and safety implications before making a purchase. It is also recommended to consult with a qualified electrical engineer or motor specialist to ensure proper installation and maintenance.

Details:

STELLAR SR55-477 3 PHASE 400 HP AT 480V SOFT START. Dijon's Electrical Sales. 4204 Evan Brooks Drive.

part #: sr55477 prices

• $2600.00-$3000.00

specifications acdrivestream:

• brand: Stellar
• model#: SR55-477 477
• part type: Start Hp 480v Amplifier
• maximum load: 400 Hp
• input voltage: 200-480v
• manufacturer part number: SR55-477

seller acdrivestream:

• rating: 99.8%
• city: Baton Rouge, Louisiana
• # reviews: 1036

offer acdrivestream:

• options: Ship-to-home
• quantity: 1
• availability: In Stock
• started: May 4, 2026
• sold: 0

returns acdrivestream:

• policy: No Returns

general acdrivestream:

• Drives Starters > Drives Motor Controls > General Purpose AC Drives
• condition: Used

shipping acdrivestream:

• cost: $44.74
• carrier: UPS
• type: Calculated
• transit: 3-7 Days
• service: UPS Ground, UPS Next Day Air, UPS Next Day Air Saver
• class: Standard, One-day

payments acdrivestream:

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