ACS550-01-072A-4 ABB Frequency Converter 72A 380V IP21 3P

1.Overview of the ACS550-01-072A-4 ABB

The ABB ACS550-01-072A-4 is a high-performance three-phase low-voltage drive, part of ABB's 550 standard drive series. This model is designed for pumps, fans, and constant-torque applications (such as conveyors) in industrial environments. With a rated power of 37 kW and a rated output current of 72 A, it supports a three-phase AC 380-480 V supply voltage and is ideal for applications requiring fast installation, easy commissioning, and no special engineering requirements. With its sensorless vector control technology and extensive built-in functionality, this drive excels in improving energy efficiency and control accuracy.

The ACS550-01-072A-4 is the 37 kW flagship model in ABB's classic ACS550 series. Featuring an IP21 wall-mounted design, it includes dual swing-sensing DC reactors and a Class C2 EMC filter. Designed for constant-torque and variable-torque loads such as fans, pumps, conveyors, mixers, and air compressors, it provides users with a plug-and-play, energy-efficient experience.

2.Core Features:

Model: ACS550-01-072A-4 (Wall-mount, IP21)

1. Key Parameters
Applicable Motor Power: 37 kW (Light Duty) / 30 kW (Heavy Duty)
Rated Output Current: 72 A (Light Duty) / 59 A (Heavy Duty)
Input Voltage: 380–480 V ±10%, three-phase, 50/60 Hz
Overload Capacity: Light Duty 110% for 60 s; Heavy Duty 150% for 60 s
Protection Rating: IP21 (IP54 kit optional)
Cooling Method: Forced air cooling, fan speed automatically adjusts with temperature
Dimensions (H × W × D): 700 × 260 × 300 mm (R4 structure)
Weight: ≈ 26 kg
Ambient Temperature: -15°C to +40°C (>40°C, linear derating of 1%/°C, maximum 50°C) ℃)
Altitude: 0–1000 m (rated output) (>1000 m, derating 1%/100 m, maximum 4000 m)
Certifications: UL, cUL, CE, C-Tick, GOST R, RoHS

2. Core Functions
Dual swing-inductor DC reactors: Automatically adjust inductance with load, reducing grid-side harmonics by over 30%, meeting IEC61000-3-12 requirements without the need for external reactors.
Sensorless vector control: 200% starting torque at 0.5 Hz, high torque at low speed without tripping.
Built-in Class C2 EMC/RFI filter: Suitable for both first and second environment applications, eliminating the cost of additional filters.
Dual rated mode: One-touch switching between light and heavy load curves, accommodating both fans, pumps, and constant torque loads.
Energy saving calculator: Real-time display of kWh, CO₂ emissions reductions, and energy savings in local currency, facilitating energy efficiency audits. Coated circuit board: Conformal coating for dust and corrosion resistance, suitable for harsh environments such as the textile, chemical, and water treatment industries.
Assistant-style Chinese graphical control panel: Real-time clock, fault logging, parameter copy/backup, and FlashDrop support for one-minute batch downloads.
Built-in Modbus RS-485 + slot-type fieldbus: Profibus-DP, CANopen, DeviceNet, and Ethernet/IP for plug-and-play operation.
Cycling soft start function: Replaces traditional soft starters, reducing water hammer and mechanical shock, extending pipe network life.
Quiet operation: Switching frequency 1–16 kHz, temperature-adaptive adjustment, noise level ≤ 65 dB.
Brake chopper: Standard built-in brake unit, supports direct connection of an external brake resistor for rapid stopping.
Global compatibility: The same model meets the grid and safety regulations of Europe, North America, Asia Pacific, and other regions, ensuring worry-free export.

3. Typical Applications
Fans: Boiler forced/induced draft fans, cooling towers, subway tunnel ventilators
Pumps: Constant pressure water supply, fire protection pressure stabilization, sewage treatment, and recirculating cooling
Constant torque equipment such as air compressors, extruders, mixers, crushers, and conveyors
Continuous production environments such as food, pharmaceutical, textile, chemical, HVAC, and municipal water treatment.

4. Ordering Information
Model: ACS550-01-072A-4
Optional Accessories: Assistant control panel, IP54 kit, Profibus/CANopen/Ethernet adapter, braking resistor, output reactor, and EMC shield clamp
The ABB ACS550-01-072A-4, with its four key advantages of high integration, easy commissioning, stable operation, and low harmonics, provides a one-stop, plug-and-play, energy-saving drive solution for 37 kW-class fans, pumps, and constant torque loads. It is an ideal choice for OEMs and end users to quickly upgrade energy efficiency and reduce total cost of ownership.

3.Product details pictures

4. Related products

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