ABB ACS550-U1-078A-4 AC Drive - IP21/NEMA1, 60HP, 380-500V
Part Number: 3AUA0000009443
Quick Summary
The ACS550-U1-078A-4 drive by ABB controls AC motors in industrial equipment and process lines. Engineers often face motor overspeed, energy waste, and unplanned downtime when selecting mismatched drives. This model carries CE compliance, IP21-NEMA1 protection, and a rugged R4 enclosure for reliable operation in general factory environments. As part of the ACS550 family, it delivers scalable motor control with simple commissioning, reducing energy use and maintenance costs across mid‑size production lines. With a 380-500V input range and 60HP rating, it matches a wide set of standard motors while keeping installation straightforward. Overall, this drive supports efficient, dependable automation that helps engineers meet uptime targets and improve process reliability.
Product Information
Extended Description
3AUA0000009443 ABB: ACS550-U1-078A-4
Voltage and frequency flexibility supports 380-500V ±10% and 48-63 Hz, enabling direct control of medium-size motors without multiple part numbers. This translates to lower spare parts inventory and faster commissioning across conveyors, pumps, and fans. Enclosure and protection IP21-NEMA1 with R4 ruggedness provides reliable operation in general factory environments. By meeting common industrial protection standards, this drive reduces enclosure modification costs and minimizes unplanned downtime in assembly lines. Power and performance: 60HP rating with ~77A current capacity supports mid-size motors. With robust torque and current capacity, it accelerates loads smoothly, improving process stability and energy efficiency. Installation and wiring: Dir Connect wiring and bottom/side conduit simplify panel layout and cabling. These features streamline installation, reduce panel depth, and facilitate maintenance, while ensuring compliant, neat terminations. Reliability and lifecycle value: As part of ABB's ACS550 family, the U1-078A-4 integrates standard control features and diagnostics for proactive maintenance. This minimizes service frequency, extends motor life, and delivers predictable total cost of ownership for production operations.
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FAQs
The ACS550-U1-078A-4 is designed to drive motors up to 60 horsepower with a current rating near 77 amps. It operates from 380 to 500 V with ±10% tolerance and handles 48 to 63 Hz supply, covering most regional power systems. This compatibility makes it ideal for mid-size conveyors, pumps, and fans in manufacturing environments.
IP21-NEMA1 protection provides basic enclosure integrity suitable for general factory environments, while the rugged R4 enclosure enhances durability in typical industrial settings. This combination reduces enclosure modification requirements, speeds up installation, and minimizes downtime due to environmental exposure, making it suitable for general-purpose machine control panels.
Mid-size applications such as conveyors, pumps, and fans in packaging, process, and assembly lines benefit most. The 60HP / 77A capability matches medium-load motors, while the 380-500V range supports regional power systems. The drive’s protection and wiring options simplify integration into existing control architectures, improving process stability and energy efficiency.
Dir Connect wiring simplifies terminations by reducing wiring complexity and panel space, while bottom/side conduit options enable flexible cabinet layouts. When planning installation, account for cable routing, accessibility for maintenance, and compliance with local electrical codes to ensure neat, safe terminations and straightforward serviceability.
Upgrading to the ACS550-U1-078A-4 can reduce energy consumption through efficient motor control and smooth operation, leading to lower utility costs. The robust protection and simplified commissioning decrease maintenance frequency and spares inventory, while the compact wiring and enclosure design shorten installation time and improve line uptime, delivering a favorable total cost of ownership for mid-size automation projects.