
The ABB ACS355-03U-38A0-4 is a low-voltage AC machinery drive module designed for OEM machine builders, system integrators, and panel builders. It delivers 25 HP (18.7 kW) output with a rated current of 38 A, operating from a 3-phase 380-480 VAC input supply at 50/60 Hz. This compact R4 frame drive features IP20 protection and wall-mount capability. Engineered for fast installation and commissioning, the ACS355 supports sensorless vector control for both asynchronous AC induction motors and permanent magnet synchronous motors. It includes built-in features such as a brake chopper, EMC filter for second environment, Safe Torque Off function, and FlashDrop tool for rapid parameter setup without powering the drive. Typical applications span food and beverage, material handling, printing, rubber and plastics processing, and woodworking industries. The drive offers flexible connectivity options supporting industry-standard fieldbus protocols including PROFIBUS DP, CANopen, Modbus, EtherNet/IP, and PROFINET through optional adapters.
Item Details
- Brand Name: ABB
- Manufacturer: ABB
- Item Type Name: AC Machinery Drive
- Product Family / Series: ACS355
- Series: ACS355 Machinery Drives
- Model Number: ACS355-03U-38A0-4
- Frame Size: R4
- Enclosure Type: IP20 Open Type
Product Specifications
- power_rating_hp: 25 HP
- power_rating_kw: 18.7 kW
- output_current: 38 A
- input_voltage: 380-480 V AC
- input_phases: 3-phase
- output_phases: 3-phase
- frequency: 50/60 Hz
- control_method: Sensorless Vector Control
- apparent_power_output: 37 kVA
- control_supply_voltage: 24 V DC ±10%
- control_supply_current_max: 200 mA
- operating_temperature: -10 to 40 °C (50 °C with 10% derating)
- relative_humidity: <95% without condensation
- protection_class: IP20
- mounting_type: Wall-mount / Cabinet-mount
Additional Details
- Certifications / Approvals: UL, cUL, CE
- Built In Features: Brake chopper, EMC filter for 2nd environment, Safe Torque Off
- Communication Protocols: PROFIBUS DP, CANopen, Modbus, EtherNet/IP, PROFINET (via optional adapters)
- Application Macros: Up to 8 preset operating sequences
Measurements
- Weight: 4.4 kg (9.7 lb)
- Dimensions: 244 mm H × 260 mm W × 169 mm D (9.61 in × 10.24 in × 6.65 in)
All PLC Direct products come with a 1-year warranty. The warranty is issued by PLC Direct. Warranty coverage commences at the date of purchase. The warranty is for mechanical defects or failures not caused by human factors including but not limited to (a) incorrect installation, (b) operating the unit in sub-optimal conditions or in scenarios not recommended by the manufacturer, (c) poor unit maintenance, etc. The warranty does not cover programming or software related issues.
If the product is eligible for PLC Direct’s warranty coverage and the customer encounters an issue with the product, we will request the item is shipped to us for diagnosis and examination. Regardless of the cause of product issues, the customer will bear responsibility for the cost of shipping the unit to PLC Direct for evaluation. Where the unit was damaged by human factors, we will offer a repair or replace quote; in cases where damage was caused by human factors, the customer is responsible for the cost of shipping the repaired/replaced unit from PLC Direct to the customer. Where the unit was not damaged by human factors but is covered by PLC Direct’s warranty, we will repair or replace the unit at our cost (or, in rare cases, refund you your purchase); in such cases, PLC Direct will bear the cost of shipping the repaired or replaced product back to the customer. It is up to PLC Direct’s discretion whether to repair, replace, or refund the customer in such cases. Diagnoses can take time to complete based on technician availability and the complexity of diagnosis.
In no event shall PLC Direct be liable for any damages except actual damages up to, but not exceeding, the amount paid to us for the product, including we shall not be liable for any consequential or indirect damages or lost profits whether or not advised of same.
PLC Direct offers free shipping worldwide. Product ship from a various warehouses worldwide based on the customer's and the product's location. The estimated delivery date on the product page is PLC Direct's best estimated assuming a US-based shipping destination.
Regardless of where the product is shipping from, PLC Direct covers all duties for US-based shipping destinations. For non-US-based shipping destinations, customers are responsible for duties as appropriate.
PLC Direct's focus is on balancing price with lead time. Some but not all products can be expedited. If you have questions about delivery ETAs, please contact our team.

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