ACS150-03E-02A4-4 VFD Inverter Drive For Atlas Copco Compressor

Product Introduction

Smooth motor speed control and reliable cooling protection in one compact drive. ACS150-03E-02A4-4 (shown as ACS150-03E-02, A4-4) is an ABB ACS150 series frequency converter used in Atlas Copco compressor systems. It typically drives cooling fans, pumps or auxiliary motors, delivering soft start, energy-saving speed regulation, overload protection and stable operation under variable load.

A failing drive causes fan/pump no-run, over-current trip, erratic speed, alarm faults, or cooling failure. During replacement: isolate power, photo all terminals, confirm model ACS150-03E-02A4-4 and ratings, swap unit, restore wiring, power on, reload matching parameters (or copy from old if readable), verify motor direction/speed. Not plug-and-play — commissioning required.

Also called ABB ACS150 inverter, VFD, frequency drive, auxiliary motor controller, compressor cooling drive.