ACS550-01-038A-4 18.5kW General Purpose Drive 400V IP21 R3 | ABB

The Original New ABB ACS550-01-038A-4 is an 18.5 kW (25 HP) general purpose wall-mounted drive from the ABB ACS550 series, engineered for reliable motor control across a wide range of industrial applications. Rated at 38 A with a 380–480 V three-phase input, this drive delivers efficient speed and torque control for pumps, fans, conveyors, compressors, mixers, and other variable and constant torque applications. Featuring an IP21 / NEMA Type 1 enclosure, integrated Category C2 EMC filter, patented built-in DC swinging choke for harmonic reduction, and Safe Torque Off (STO) safety function, the ACS550-01-038A-4 simplifies installation and reduces the need for external components. The drive is part of the ABB general purpose drive portfolio and includes an intuitive assistant control panel for fast commissioning. Its compact R3 frame size makes it suitable for demanding industrial environments across multiple sectors, including HVAC, water treatment, material handling, and food and beverage processing.

Core Engineering Highlights:
18.5 kW (25 HP) Normal Duty power rating | 38 A nominal output current (Normal Duty) | 15 kW Heavy Duty output power | 380–480 V 3-phase input (+10%/-15%) | 0–500 Hz output frequency range | IP21 / NEMA Type 1 wall-mounted enclosure | Frame size R3 | Integrated Category C2 EMC filter + patented DC swinging choke | Safe Torque Off (STO) safety function | Assistant control panel included | Modbus RTU via RS-485 built-in | 150% overload capacity for Heavy Duty

Key Features:

• Original New ABB ACS550-01-038A-4 drive (3AUA0000002431-D)

• 18.5 kW (25 HP) rated output power (Normal Duty), 38 A nominal output current

• Heavy Duty output: 15 kW, 31 A

• 380–480 V AC 3-phase input (+10%/-15%), 48–63 Hz

• 0–500 Hz output frequency range

• IP21 / NEMA Type 1 enclosure for control cabinet or wall mounting

• Frame size R3 with compact dimensions

• Integrated Category C2 EMC filter for reduced electromagnetic emissions

• Patented built-in DC swinging choke for harmonic reduction

• Safe Torque Off (STO) safety function

• Built-in brake chopper for dynamic braking

• Assistant control panel included for easy commissioning

• Scalar (V/f) and sensorless vector control modes

• Modbus RTU communication via RS-485 built-in

• Overload capacity: Normal Duty 110% for 60 seconds; Heavy Duty 150% for 60 seconds

• Coated circuit boards for environmental protection

• Wall-mounted design for simple installation

• 2 analog inputs, 2 analog outputs, 6 digital inputs, 3 relay outputs

Applications:

• Pumps and water/wastewater treatment systems

• Fans, HVAC and ventilation equipment

• Conveyors and material handling systems

• Compressors and blowers

• Constant torque applications and general machinery

• Food and beverage production facilities

• General industrial automation and OEM machinery

Technical Specifications:

System Compatibility:

• Compatible with a wide range of industrial communication protocols including Modbus RTU (built-in) with numerous internally mountable fieldbus adapters (PROFIBUS, DeviceNet, EtherNet/IP)

• Supports assistant control panel for easy commissioning and operation

• Compatible with ABB ACS550 series accessories including mounting kits and fieldbus adapters

• Suitable for use with ABB motors and third-party motors

• Supports PID control for closed-loop applications

• Optional: FlashDrop tool and DriveWindow Light for remote monitoring

Related Products:

• ACS-CP-C – Basic control panel with numeric display

• ACS-CP-D – Basic control panel with multi-language support

• ACS-AP-I – Advanced control panel with graphical display

• ACS550-01-023A-4 – 11 kW version (lower power)

• ACS550-01-059A-4 – 30 kW version (higher power)

• Fieldbus adapters – PROFIBUS, PROFINET, EtherNet/IP, DeviceNet

• Mounting kit – For panel or remote mounting of control panel

• FlashDrop tool – For unpowered drive configuration

• DriveWindow Light – For remote monitoring

PLC ERA is an independent industrial automation distributor supplying genuine Original New products through established global supply channels. All products are factory sealed when applicable and undergo quality inspection prior to shipment. ABB is a trademark of ABB Group.