ABB ACS550-01-04A1-4 Inverter Drive – 1.5 kW, 3PH, IP21, VxF & Vector Control

The ABB ACS550-01-04A1-4 inverter drive is a compact and efficient variable frequency drive engineered for controlling motors up to 1.5 kW in small-scale industrial and commercial systems.

Offering both VxF and sensorless vector control modes, built-in RS-485 Modbus, and a user-friendly keypad, this drive delivers dependable performance for fans, pumps, and other low-power applications.

Technical Specifications

Model: ACS550-01-04A1-4
Series: ACS550
Type: Variable Frequency Drive (VFD)
Power Output: 1.1 kW (1.5 HP) at High Overload / 1.5 kW (2 HP) Fan & Pump Duty
Enclosure: IP21
Mounting: Cubicle Mount
Application: HVAC, small motors, laboratory equipment, and OEM machinery

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): 3.3 A (High Overload) / 4.1 A (Normal Duty)
• Overload Capacity: 150% for 60 s (HO) / 110% for 60 s (ND)
• Control Type: VxF and Sensorless Vector Control
• Brake Chopper: External resistor required (120–470 Ω)
• Heat Dissipation: Max 52 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: R1
• Weight: 6.5 kg
• Dimensions: 369 × 125 × 212 mm (H × W × D, incl. gland kit)
• Cooling: Internal fan (ventilation: 200 mm above/below, 0 mm sides)
• Mounting Holes: 4 × 5.5 mm slotted holes (98 mm × 318 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

The ABB ACS550 series has been replaced by the ABB ACS580 since January 2018
Equivalent ACS580 models offer enhanced functionality and efficiency

Key Benefits of the ABB ACS550-01-04A1-4

✅ Compact Power Control: Efficiently supports motors up to 1.5 kW.

✅ Modbus RTU Included: No need for external communication modules.

✅ Minimal Heat Loss: Low power dissipation at just 52 W.

✅ Slim R1 Frame: Ideal for small panels and tight installations.

✅ Proven ABB Reliability: Trusted VFD technology for industrial performance.

📦 In Stock Now at Drive Outlet Megastore

At Drive Outlet Megastore, we offer unbeatable prices on the ABB ACS550-01-04A1-4 inverter drive.

Compact, capable, and backed by ABB’s engineering excellence, this drive is ideal for controlling small motors in space-limited environments.

Request a quote or contact us today

Trusted ABB Drives. Fast Delivery. Lowest UK Prices – Only at Drive Outlet Megastore.