Variable Frequency Drives (VFDs)

A variable frequency drive (VFD) controls a motor's speed and torque by varying the frequency and voltage it sees. Edmundson Industrial sources VFDs across the lines listed here: Allen-Bradley PowerFlex, ABB ACS, Yaskawa, Siemens, Eaton, Danfoss, and Schneider Altivar, in new-surplus, used-tested, and sourced-to-order condition. Whether you need a current PowerFlex 525 today or a long-obsolete drive to keep a line running, send the catalog number off the nameplate and we'll quote availability, condition, and lead time.

Independent sourcing, not an authorized distributor. We supply new-surplus, used-tested, and sourced-to-order drives, with condition disclosed before sale.

Current-production drives we source

Brand	Common current lines	Pages
Allen-Bradley PowerFlex	525, 523, 753, 755 (750-series)	PowerFlex 525 →753 / 755 →523 →
ABB	ACS580, ACS880, ACS380	ABB ACS →
Yaskawa	GA800, GA500, FP605	Yaskawa →
Siemens	Sinamics G120, G120C, V20	Siemens G120 →
Eaton	PowerXL DG1, DH1, DM1	Eaton PowerXL →
Danfoss	VLT AutomationDrive (FC302)	Danfoss VLT →
Schneider / Square D	Altivar ATV320, ATV340, ATV630	Altivar →

Obsolete & legacy drives

Drive no longer made? We cross-reference it to the modern replacement and source the original as surplus. See the legacy guides: PowerFlex 70, PowerFlex 40, PowerFlex 4 / 400, PowerFlex 700 / 700S, 1336 / 1305, and SCR & DC drive systems.

How do we quote a VFD?

Send the catalog number off the drive nameplate, or the motor horsepower and voltage if you don't have one.
We confirm the configuration: voltage class, HP / current, enclosure, and communication option.
We quote condition, price, and lead time: new-surplus, used-tested, or sourced-to-order, timing confirmed with the request.
If the replacement changes the panel, our fabrication side supplies adapter plates, sub-panels, and modified enclosures so the new drive mounts where the old one came out.

VFD by horsepower & voltage

We source drives from fractional horsepower through 1000+ HP, across 120 V, 200/240 V, 480 V, and 600 V low-voltage classes and medium-voltage ratings. If you don't have a catalog number, send the motor HP, voltage, and application and we'll match a drive.

Condition & sourcing

Every drive is supplied as new-surplus (unused, from the secondary market), used-tested, or sourced-to-order, with condition disclosed before sale and photos on request. We are an independent surplus and sourcing company, not an authorized distributor.

FAQ

What is a variable frequency drive (VFD)?

A VFD (also called an AC drive or inverter) controls an AC motor's speed and torque by varying the frequency and voltage supplied to it, which saves energy and improves process control.

Do you sell new VFDs or only obsolete ones?

Both. We source current-production drives (for example Allen-Bradley PowerFlex 525, 753, and 755) as new-surplus and sourced-to-order, and we source obsolete drives that are no longer made. We are an independent surplus and sourcing company, not an authorized distributor.

Which VFD brands do you source?

Allen-Bradley PowerFlex, ABB ACS, Yaskawa, Siemens Sinamics, Eaton, Danfoss VLT, and Schneider / Square D Altivar, in low-voltage and medium-voltage ratings.

How do you quote a VFD?

Send the catalog number off the drive nameplate, or the motor horsepower and voltage if you don't have one. We confirm voltage, HP, enclosure, and communication option, then quote condition, price, and lead time: timing confirmed with the request.

Can you match a drive that's discontinued?

Yes: that's our specialty. We cross-reference the obsolete drive to its modern replacement and also source the original as surplus, so you can retrofit or drop in.

Request a Quote

or send the drive catalog number or motor HP/voltage to sales@edmundsonindustrial.com · (832) 975-8827 · Houston, TX. Response timing is confirmed with the request.

Drive pages

Send the drive catalog number or motor HP and voltage.

Condition disclosed before sale. Response timing is confirmed with the request.

Request a Quote