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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

BrandAllen-Bradley / Rockwell Automation
FamilyPowerFlex 40 (22B-series catalog numbers, e.g., 22B-D012N104)
ClassMicro AC drive — PowerFlex 4-class family (4, 40, 40P, 400)
LifecycleDiscontinued / end-of-life — verify current Rockwell status at quote
ConfigurationIntegral keypad · legacy DriveTools / Connected Components Workbench

Cross-Reference

If you have (obsolete)Recommended pathNotes
PowerFlex 40 (22B-…)PowerFlex 525Rockwell's migration path. Rebuild parameters; confirm voltage class, current rating, and frame/enclosure dimensions.
PowerFlex 40 with comm card (22-COMM-…)PowerFlex 525The 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-isNew-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 ratingSame 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)

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 surplus stock moves quickly. 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 — typically the fastest way to restart a stopped machine.
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 always 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. Same-day response on most requests.

Related Allen-Bradley legacy pages

Send us your catalog number.

Condition disclosed before sale. Same-day response on most requests.

Request a Quote