ABB ACS550-01-038A-4 Inverter Drive – 15kW/18.5kW, IP21
The ABB ACS550-01-038A-4 inverter drive delivers robust and energy-efficient motor control for both general-purpose and demanding industrial applications, supporting motors rated up to 18.5 kW.
This versatile VFD features dual control modes, built-in RS-485/Modbus communication, and advanced programmability—ideal for fan, pump, and conveyor applications where performance and reliability matter.
Technical Specifications
Model: ACS550-01-038A-4
Series: ACS550
Type: Variable Frequency Drive (VFD)
Power Output: 15 kW (20 HP) at High Overload / 18.5 kW (25 HP) Fan & Pump Duty
Enclosure: IP21
Mounting: Cubicle Mount
Application: HVAC, pumps, fans, compressors, conveyors, and general industrial motors
Electrical Specifications
- Input Voltage: 380–480 V AC (±10%)
- Phase: 3-phase
- Frequency Range: 50–60 Hz (±5%)
- Output Frequency: 0–500 Hz
- Output Current (HO / ND): 31 A (High Overload) / 38 A (Normal Duty)
- Overload Capacity: 150% for 60 s (HO) / 110% for 60 s (ND)
- Control Type: VxF and Sensorless Vector Control
- Brake Chopper: Not included (optional external unit)
- Heat Dissipation: Max 562 W
I/O and Communication
- Digital Inputs: 6 programmable
- Analog Inputs: 2
- Analog Outputs: 2
- Relay Outputs: 3 contact sets
- Keypad: Assistant Control Panel (included)
- RS-485 / Modbus RTU: Built-in
Mechanical and Environmental
- Mounting Type: Cubicle-mounted
- Frame Size: R3
- Weight: 16 kg
- Dimensions: 583 × 203 × 231 mm (H × W × D, incl. gland kit)
- Cooling: Internal fan (ventilation: 200 mm above/below, 0 mm sides)
- Mounting Holes: 8 × 6.5 mm slotted holes (160 mm / 98 mm × 473 mm centres)
- Operating Temp: Up to +40 °C ambient
Compliance and Certifications
- CE Certified
- UL / cUL Listed
- EMC Compliance: IEC EN61800-3:2004 (C3/C2)
- RoHS Compliant
- Manufacturing Standards: ISO 9001, ISO 14001
Replacement Information
As of January 2018, the ABB ACS550 series has been succeeded by the ABB ACS580 range
Fully compatible equivalents available for upgrade or system redesign
Key Benefits of the ABB ACS550-01-038A-4
✅ Flexible Output Power: Drives 15 kW or 18.5 kW motors depending on duty cycle.
✅ Built-In Modbus: No need for external adapters for basic communication.
✅ Energy Efficient: Designed to reduce consumption in HVAC and pump systems.
✅ Compact Footprint: Space-saving R3 frame with rear mounting hole pattern.
✅ Proven ABB Reliability: Industrial-grade components and long service life.
📦 In Stock Now at Drive Outlet Megastore
At Drive Outlet Megastore, we offer unbeatable prices on the ABB ACS550-01-038A-4 inverter drive.
This trusted ABB model supports robust control, streamlined setup, and dependable operation—ideal for integration into existing industrial systems.
Request a quote or contact us today
Trusted ABB Drives. Fast Delivery. Lowest UK Prices – Only at Drive Outlet Megastore.
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