ABB ACS580-01-044A-4+B056J429Product Description Drive, AC, 25HP, 480V, 34. 0A, CT, N12 The ABB ACS580 01 044A 4+B056J429 is a top of the line variable frequency drive (VFD) designed to provide high performance motor control. It features overcurrent and short circuit protection, as well as advanced communication and monitoring options. Its easy to use interface makes it simple to operate and maintain. The ACS580 is an ideal solution for reliable and efficient motor control.