ABB ACS320-03U-02A4 HVAC Microdrive - BACnet MS/TP
Part Number: 3AUA0000039657
Quick Summary
The ACS320-03U-02A4 HVAC microdrive delivers precise motor control for pump and fan applications in commercial and industrial HVAC systems. Engineers often face energy waste and integration headaches when coordinating variable-speed drives with building management systems. UL-listed for safety and designed with embedded BACnet MS/TP support, this compact drive pairs reliability with easy BMS integration. For procurement teams, the 1 HP, 460 V rating translates into familiar compatibility and lower lifecycle costs, while installers benefit from straightforward setup. The device’s compact footprint, simple wiring, and robust protection features help reduce commissioning time and maintenance across diverse HVAC configurations. Designed for installations with limited space, it also supports future scalability as system loads change.
Product Information
Extended Description
3AUA0000039657 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 → Business Impact → Application: The ACS320-03U-02A4 integrates BACnet MS/TP directly into the drive, cutting commissioning time and reducing wiring complexity for HVAC units. This enables facility teams to monitor and command pump and fan speed from a single building management system dashboard, improving fault detection, start-up reliability, and change management. In practice, booster pumps, exhaust fans, condenser fans, and supply and return fans benefit from seamless speed control without requiring external converters or adapters. The embedded HVAC features support ramping, scheduling, and fault reporting, enabling proactive maintenance and reduced energy waste across discrete HVAC zones. Feature → Business Impact → Application: With 1 HP at 460 V and 4.1 A three-phase operation, the drive aligns with common HVAC motor sizes, simplifying parts sourcing and reducing panel space. The compact footprint fits tight mechanical rooms and rooftop units, while eliminating the need for bulky drives in retrofit projects. This compatibility helps procurement teams avoid over- or under-sizing across multiple chillers, pumps, or air-handling units. Feature → Business Impact → Application: Energy efficiency is driven by precise speed control, optimizing motor load for fluctuating HVAC demand and delivering measurable energy savings. The drive includes protective functions such as overcurrent, thermal overload, and stall protection, which minimize unplanned downtime and extend bearing life. Real-time diagnostics and event logging simplify maintenance planning and spare-parts management. Feature → Business Impact → Application: Installation advantages include UL-listed safety, straightforward wiring to standard three-phase circuits, and compatibility with ABB's ACS320 software tooling for diagnostics and tuning. The product's compact footprint reduces enclosure space and cooling requirements, while BACnet MS/TP support eases integration with modern BMS architectures. These factors shorten project schedules and improve long-term reliability in HVAC applications. Industry context and value: In new-builds and retrofit projects, a compact HVAC microdrive with BACnet integration supports energy management mandates and facility-wide digital transformation. The ACS320-03U-02A4 offers a proven path to lower lifecycle costs, easier maintenance planning, and improved occupant comfort through quieter, more stable fan and pump operation.
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FAQs
The ACS320-03U-02A4 is wired to a three-phase 460 V supply and uses its built-in accessory connections to power and control pumps and fans. Connect motor leads per the ABB ACS320 wiring diagram, enable the device, and configure motor parameters. If BACnet MS/TP is used, integrate with the building management system for centralized monitoring and control.
Key specs include 1 HP output, 460 V three-phase input, and a 4.1 A load current. The drive provides precise speed control and built-in HVAC features, including BACnet MS/TP communication for BMS integration. It is UL-listed for safety and designed for pumps and fans in HVAC equipment.
Yes. The 1 HP, 460 V, 4.1 A three-phase ACS320-03U-02A4 is well suited for booster pumps and exhaust/condenser fans in commercial and industrial HVAC setups. Embedded BACnet MS/TP supports direct BMS integration, enabling coordinated control across multiple devices and zones while reducing energy consumption.
The ACS320-03U-02A4 is UL-listed for safety, supporting reliable operation in HVAC environments. The spec sheet highlights 460 V operation and BACnet MS/TP integration. For additional certifications such as CE marking or IP ratings, please consult ABB documentation or your ABB representative.
The drive enables energy savings through precise speed control, reducing motor load during low-demand periods. Seamless BACnet MS/TP integration improves fault detection and maintenance planning, while the UL-listed safety and compact installation minimize commissioning time and total cost of ownership across HVAC projects.