ABB ACS550-U1-045A-4+B055 Motor Drive - 4-Pole
Part Number: 3AUA0000011031
Quick Summary
The ABB ACS550-U1-045A-4+B055 motor drive provides precise VFD control for industrial motor applications. This compact solution helps you optimize speed and torque while reducing energy waste. Many users struggle with improper motor starts that cause spikes in current and premature wear; the ACS550 addresses these challenges with soft-start and programmable acceleration. This drive family is widely recognized for CE compliance and IP-rated variants, enhancing safety and durability in harsh environments, with SIL-rated configurations available when integrated with safety modules. For engineers and procurement teams, this translates to predictable performance, simpler integration with ABB ecosystem products, and a clear path to compliance while lowering total cost of ownership.
Product Information
Extended Description
3AUA0000011031 ABB: ACS550-U1-045A-4+B055
Feature: 45A nominal current rating and 4-pole configuration enable reliable control of mid-size motors used in pumps, fans, and conveyors. Business Impact: Supports steady torque delivery and reduced electrical stress, contributing to longer motor life and lower maintenance. Application: Suitable for HVAC, process pumps, and material handling where predictable performance matters. Feature: Built-in motor protection and overload safeguards minimize downtime and equipment wear. Business Impact: Enhanced reliability, lower spare-part costs, and reduced unplanned maintenance. Application: OEM equipment and retrofit projects across manufacturing lines. Feature: Adjustable acceleration and deceleration profiles with soft-start reduces mechanical shock and peak inrush. Business Impact: Lower energy peaks, smoother process control, and extended drive life. Application: Conveyors, dosing systems, and pump applications with frequent start/stop cycles. Feature: Streamlined commissioning and straightforward integration with ABB ecosystem products. Business Impact: Quicker time-to-production, lower commissioning labor, and simplified maintenance. Application: New installations and speed-up retrofits in automation architectures. Feature: Energy efficiency emphasis of variable-speed control translates to reduced operating cost and carbon footprint. Business Impact: Lower utility bills and improved process stability. Application: Continuous-duty processes in manufacturing and utilities looking for lifecycle savings.
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FAQs
The ACS550-U1-045A-4+B055 is designed for 3-phase motors up to 45A, with a 4-pole configuration, making it well suited for mid-size pumps, fans, and conveyors. It delivers precise speed control and torque management, enabling reliable operation in HVAC, water management, and material handling applications while supporting straightforward integration into existing ABB and third-party automation architectures.
The 45A rating supports mid-size motors with adequate headroom for startup currents, while the 4-pole design provides balanced speed and torque for typical industrial loads. This combination reduces torque ripple, minimizes electrical stress on the motor, and improves overall process stability, leading to longer motor life and fewer nuisance trips in demanding environments.
Yes, the ACS550-U1-045A-4+B055 aligns with widely recognized CE standards for industrial automation equipment. When integrated into control panels, it benefits from common safety and electrical compliance requirements, supporting safer operation, easier certification for panel assemblies, and compatibility with standard enclosure designs in manufacturing settings.
Plan for proper single- or three-phase supply within the drive’s voltage range, correct wiring of motor leads, and appropriate protection devices. Ensure adequate cooling and vibration isolation, and use the recommended parameter set for your motor type. The drive is designed for straightforward integration with existing ABB controls and can simplify retrofits by leveraging familiar ABB configuration workflows.
The ACS550-U1-045A-4+B055 can reduce energy consumption through optimized speed control and reduced motor wear, translating to lower energy costs and maintenance expenses. Its soft-start capability minimizes mechanical stress at startup, potentially decreasing downtime and extending motor life, which supports faster return on investment for mid-size automation projects.