Allen-Bradley PowerFlex 40: Replacement & Cross-Reference

The Allen-Bradley PowerFlex 40 is a discontinued micro AC drive: Rockwell Automation has retired the PowerFlex 4-class family from active production. The recommended modern replacement is the PowerFlex 525, Rockwell's stated migration for the 40. If you'd rather not touch the panel or the program, Edmundson Industrial sources new-surplus, used-tested, and reconditioned PowerFlex 40 drives as direct drop-ins.

Status

Brand	Allen-Bradley / Rockwell Automation
Family	PowerFlex 40 (22B-series catalog numbers, e.g., 22B-D012N104)
Class	Micro AC drive: PowerFlex 4-class family (4, 40, 40P, 400)
Lifecycle	Discontinued / end-of-life: verify current Rockwell status at quote
Configuration	Integral keypad · legacy DriveTools / Connected Components Workbench

Cross-Reference

If you have (obsolete)	Recommended path	Notes
PowerFlex 40 (22B-…)	PowerFlex 525	Rockwell's migration path. Rebuild parameters; confirm voltage class, current rating, and frame/enclosure dimensions.
PowerFlex 40 with comm card (22-COMM-…)	PowerFlex 525	The 525 carries embedded EtherNet/IP: older network options (DeviceNet, etc.) need a network-level plan, not just a drive swap.
Keep the machine running as-is	New-surplus / used-tested PowerFlex 40 (we source)	True drop-in. Match the full 22B catalog string: voltage, amps, enclosure, and option codes.
Related legacy micro-drives (PowerFlex 4 / 400)	PowerFlex 523/525 by rating	Same family retirement; same migration logic. We source these surplus as well.

Confirm voltage class, output current, enclosure, and any communication option against your nameplate before substituting. Send the full catalog string and we'll verify the match.

Key Specs (platform overview)

Micro AC drive for general machine-level control: fans, pumps, conveyors, packaging
100–120V, 200–240V, 380–480V, and 500–600V classes by catalog code
Compact panel-mount frames; integral keypad and potentiometer
Optional communication cards (22-COMM series) for plant networks
Catalog string (22B-…) encodes voltage, current, and enclosure: quote from the full string

Is the PowerFlex 40 still made?

No. The PowerFlex 40 and its 4-class siblings are discontinued. Because these drives sit on so many OEM machines, conveyors, packaging lines, HVAC, small process skids, replacement demand is steady and current surplus availability changes. If one failed 40 stops a line, the practical move is a surplus drop-in now and a planned 525 migration later, on your schedule instead of the failure's.

FAQ

Is the PowerFlex 40 discontinued?

Yes: Rockwell has retired the PowerFlex 4-class family, including the PowerFlex 40. Units are available through surplus channels like Edmundson Industrial.

What replaces the PowerFlex 40?

The PowerFlex 525 is Rockwell's migration path. Parameters must be rebuilt, and dimensions and network options should be confirmed before the swap.

Can I buy a new PowerFlex 40?

New-surplus units exist. We supply new-surplus, used-tested, and reconditioned PowerFlex 40 drives: a way to keep the installed footprint while a migration is planned.

My catalog number is 22B-D012N104: can you source that exact drive?

That's a common PowerFlex 40 configuration and exactly how to ask: send the full string to us and we'll quote that specific catalog number with condition and lead time.

What do you need to quote?

The complete 22B catalog string (or a nameplate photo), acceptable condition, and your need-by date.

Availability & Quote

Condition disclosed before sale, new-surplus, used-tested, or reconditioned, with photos on request.

Request a Quote

or send the catalog string to sales@edmundsonindustrial.com · (832) 975-8827 · Houston, TX. Response timing is confirmed with the request.

Related Allen-Bradley legacy pages

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