ABB 3AUA0000003367 ACS550 Drive - IP21/NEMA1 208-240V
Part Number: 3AUA0000003367
Quick Summary
ACS550 U1 series drive from ABB delivers precise motor control for small to mid-size industrial applications. Engineers often wrestle with lengthy commissioning, wiring errors, and inconsistent performance across fluctuating voltages. This model, the ACS550-U1-075A-2, supports 208–240 V ±10%, 25 HP, and 74.8 A, with IP21-NEMA1 protection and 48–63 Hz operation, helping simplify installation and protection. With Dir Connect and Bot/Side Conduit options, it streamlines cabinet layouts and maintenance. Certifications and standards—IP21, NEMA1, and IEC motor control compliance—provide confidence for factory floor use and regulatory audits. By combining robust protection with scalable automation capabilities, it delivers energy efficiency, reduced downtime, and faster ROI for modern industrial environments.
Product Information
Extended Description
3AUA0000003367 ABB: ACS550-U1-075A-2
The ACS550-U1-075A-2 integrates closed loop style parameterization and configurable speed control to reduce energy consumption and motor wear. This feature translates to tangible Business Impact: lower energy costs and extended motor life, especially on conveyors and pumps where load varies. Application-wise, it is ideal for compact automation lines that require reliable performance under 208–240 V and ±10% supply tolerances, enabling consistent throughput. The drive supports easy installation with Dir Connect terminals and Bot/Side Conduit routing, reducing cabinet depth and simplifying field wiring, which shortens installation cycles and minimizes wiring mistakes. A robust IP21-NEMA1 enclosure protects electronics in typical factory environments, lowering protective hardware costs and enabling quicker commissioning across multiple machines. For compliance-aware projects, integrated protections and standard interfaces enhance traceability and maintenance planning, supporting uptime guarantees and regulatory readiness. In practice, end users report faster startup, easier commissioning, and predictable motor performance across changing loads, delivering measurable ROI over the first year of operation. These capabilities align with automation trends in packaging, material handling, and process equipment, where predictable torque, smooth starts, and reduced heat generation matter most. Compatibility with ABB's broader ACS550 family also means spare parts and firmware updates are readily available, supporting long-term procurement strategies and service continuity.
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FAQs
The ACS550-U1-075A-2 is designed for 208-240 V ±10% supply, typical in many commercial and industrial facilities. It supports standard motor control wiring with Direct Connect terminals and offers Bot/Side Conduit routing to simplify cabinet layout. For best results, ensure correct motor rating, confirm enclosure requirements match IP21-NEMA1 protection, and align with your control system I/O. ABB's installation guidelines recommend proper sizing of feeders and protective devices, as well as verifying harmonic compatibility with other drives on the same bus to minimize interference. This approach reduces commissioning time and protects against voltage dips that could impact performance.
This drive is particularly well-suited for small to mid-size automation tasks such as conveyor belts, dosing pumps, and cooling fans where precise speed control and reliable torque delivery are critical. With 25 HP capacity and broad frequency operation (48–63 Hz), it can handle variable-load processes common in packaging lines, material handling, and machine tools. Its rugged IP21-NEMA1 enclosure is compatible with standard factory environments, while the 208–240 V supply window aligns with common facility electrical distributions. The result is smooth process control, reduced mechanical stress, and improved line throughput without requiring custom control hardware.
IP21-NEMA1 protection means the drive enclosure provides basic protection against vertically falling water droplets and solid objects larger than 12.5 mm, suitable for non-dusty, indoor environments. For installation, this allows straightforward cabinet mounting without specialized enclosures, reducing upfront costs. It also implies careful placement away from high humidity or dust sources, with adequate ventilation to prevent overheating. When integrating with other equipment, ensure proper cable routing through the Bot/Side Conduit and maintain separation from high-power lines to minimize EMI and ensure reliable operation.
The ACS550 drive reduces energy use by controlling motor speed to match process demand, lowering idle and peak loads compared with conventional starters. Variable frequency operation minimizes torque surges during start-up, reducing mechanical wear and extending belt and bearing life. The integrated protection and diagnostics simplify maintenance planning, while the direct wiring approach shortens installation time and minimizes wiring errors. Over time, customers typically see lower energy bills, reduced downtime, and fewer spare parts for starters, contributing to a favorable total cost of ownership and faster return on investment.