ABB ACS320-03U-05A2-2 Microdrive - UL Pld 1 HP, 8.4 A
Part Number: 3AUA0000039646
Quick Summary
ABB ACS320-03U-05A2-2 Microdrive is a compact motor drive designed to optimize HVAC pump and fan performance. It delivers precise speed control to reduce energy use and wear in system-critical applications. Engineers often struggle with balancing efficiency and reliable integration within building management systems; this drive addresses that by combining programmable HVAC features with simple BACnet MS/TP communication. While the data here highlights UL listing and 230 V operation, precise CE/IP qualifications should be confirmed for your region. By aligning control logic with existing HVAC sequences, this microdrive enables faster commissioning, lower maintenance costs, and scalable performance across booster pumps, exhaust and condenser fans, and supply/return paths.
Product Information
Extended Description
3AUA0000039646 ABB: The compact ACS320 will save energy throughout your pump and fan HVAC applications. From booster pumps, exhaust and condenser fans to supply and return fans, the drive=E2=80=99s built-in HVAC features such as embedded BACnet (MS/TP) ensure easy and complete integration into building management systems.
Feature: Built-in energy-efficient VFD control for HVAC pumps and fans. Impact: Reduces energy consumption, lowers operating costs, and minimizes motor wear through controlled ramping and smooth torque delivery. Application: Booster pumps, exhaust and condenser fans, and supply/return air handlers in commercial and industrial buildings. Feature: Compact footprint and simple installation. Impact: Frees cabinet space, reduces wiring complexity, and speeds commissioning. Application: OEM integrations and retrofit projects where space is at a premium. Feature: Embedded BACnet MS/TP communication. Impact: Seamless integration with building management systems, centralized scheduling, alarming, and trend logging. Application: Control rooms and automation zones that rely on standard BACnet interfaces in hospitals, offices, and data centers. Feature: 230 V single-phase operation; 1 HP rating; 8.4 A. Impact: Compatible with common electrical supply in many facilities, minimizing panel changes and wiring. Application: Small- to mid-size HVAC pumps and fans without requiring VFD panels or transformers. Feature: UL listing and rugged HVAC suitability. Impact: Improves compliance and safety, reduces risk in OEM and retrofit deployments; supported by ABB's documentation for field service. Application: OEM equipment, retrofit projects, and serviceable systems in regulated environments.
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FAQs
The ACS320-03U-05A2-2 is designed for HVAC applications with 230 V single-phase supply and up to 1 HP motors. It provides standard drive control for booster pumps and fans, with simple wiring and common control signals. Its compact form factor makes it easy to install in typical equipment rooms, while the integrated BACnet MS/TP interface supports direct communication with most building management systems.
You can expect smooth acceleration, reduced starting current, and adjustable speed profiles that match load, improving overall efficiency. The 8.4 A rating at 230 V aligns with typical small HVAC motors, enabling reliable operation without over-sizing drives. Real-world results include energy savings, quieter operation, and longer bearing life due to controlled torque and ramp rates.
Yes. The ACS320-03U-05A2-2 embeds BACnet MS/TP for direct integration into BACnet networks, reducing wiring and simplification of alarms, trends, and scheduling from the BMS. This eliminates custom interfaces and accelerates commissioning. Ensure your BMS firmware supports BACnet MS/TP, and verify network topology and addressing to avoid conflicts.
The product data shows UL listing for safety, with 230 V operation and 1 HP capacity. While specific CE or IP enclosure ratings are not stated here, these drives are typically CE-compliant in many markets and offered with enclosure options for HVAC cabinets. Always verify current certifications with ABB datasheets and regional approvals prior to procurement.
Using a variable-frequency drive like the ACS320 reduces energy consumption by modulating motor speed to match load, lowering energy bills and wear on bearings and belts. The compact design simplifies maintenance and replacement, while built-in BACnet reduces wiring and downtime during commissioning. Over the life of the system, these factors combine to shorter payback periods and improved system reliability.