ABB ACS550-U1-027A-6 Motors & Drives - IP21-NEMA1
Part Number: 3AUA0000009453
Quick Summary
ABB ACS550-U1-027A-6 is a versatile AC drive designed to control 3-phase motors in industrial automation applications, delivering smooth start-up and precise speed control. For engineers and maintenance teams, the challenge is balancing performance with energy efficiency, wiring simplicity, and downtime during drive upgrades. This model features IP21-NEMA1 enclosure protection and practical Dir Connect and bottom/side conduit options to simplify installation in control panels and confined spaces. Operating across 48 to 63 Hz, it supports a wide range of machinery while maintaining a compact footprint and predictable thermal performance. From procurement to maintenance, you gain a scalable motor-control solution that reduces commissioning time, improves uptime, and lowers total cost of ownership.
Product Information
Extended Description
3AUA0000009453 ABB: ACS550-U1-027A-6
Feature: 25 HP output with 27 A current rating. Business Impact: Delivers robust motor torque with efficient energy use, reducing operating costs and extending motor life. Application: Suitable for conveyors, pumps, and fans in manufacturing lines. Feature: IP21-NEMA1 enclosure and Dir Connect wiring plus bottom/side conduit options. Business Impact: Simplifies installation and protects critical electronics in common factory environments, shortening setup time and enabling flexible panel layouts. Application: Panel-mounted drives in compact electrical rooms or tight equipment spaces. Feature: Wide frequency range 48–63 Hz. Business Impact: Ensures compatibility with global power systems and diverse process speeds, minimizing tuning effort. Application: Food & beverage processing lines, packaging equipment, material handling. Feature: Built-in protection and fault tolerance. Business Impact: Reduces unplanned downtime through overload and short-circuit protection, improving reliability, uptime, and maintenance intervals. Application: OEM lines and aftermarket upgrades where uptime is critical. Feature: Compatibility with standard drive networks and verification workflows. Business Impact: Streamlines spare parts management and technician training, lowering total cost of ownership. Application: Modern factories pursuing standardization across motor-control assets. Feature: Easy parameterization and commissioning workflows. Business Impact: Cuts engineering time by delivering ready-to-run configurations and safe defaults. Application: Initial setup for new lines and retrofit projects in automation-associated environments. Industry context: This ABB ACS550 family supports energy-efficient motor control, reduced wear, and scalable automation strategies for conveyors, pumps, fans, and similar drive-driven equipment.
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FAQs
Install the ACS550-U1-027A-6 using the Dir Connect wiring framework, selecting bottom or side conduit as appropriate for your control panel layout. Ensure proper clearance for cooling and connect to a 3-phase supply compatible with its 25 HP rating. Verify enclosure rating IP21-NEMA1 is intact after wiring and use correct conductor sizes per local codes.
Key specs to match are 25 HP nominal output and 27 A current rating, 48–63 Hz operating range, and IP21-NEMA1 protection. For conveyors, focus on smooth acceleration/deceleration and torque control; for pumps, emphasize constant pressure/flow with overload protection and ramp control to minimize mechanical stress.
Yes. The 25 HP, 27 A drive supports smooth speed control and energy efficiency for pump applications. Its 48–63 Hz range accommodates regional power differences, while the IP21-NEMA1 enclosure and flexible conduit options simplify panel integration in cooling systems. Verify compatibility with your pump motor enclosure and wiring standards before install.
The product specifies IP21-NEMA1 enclosure protection. Verify local CE compliance and any site-specific standards in the datasheet or with ABB representatives to ensure full regulatory alignment for your region, especially for European installations or safety audits.
You can expect reduced energy consumption due to efficient motor control, lower mechanical wear from soft-start and ramping features, and shorter commissioning times thanks to straightforward parameterization. Standardized integration with Dir Connect simplifies maintenance, stocking, and technician training, delivering a favorable total cost of ownership over the drive’s lifecycle.