In short
PowerFlex 4/40/400/70/700/753/755 replacement — match HP, voltage class, frame size, and copy parameters.
Quick checklist
- Read HP, input voltage, output amps, enclosure from nameplate.
- Identify family — 4-class vs 520 vs 750.
- Match frame size — PF70 → PF753 is typically a bolt-in swap.
- Copy parameters via DriveTools SP, Studio 5000, or HIM CopyCat.
- Re-validate motor overload and brake-resistor sizing.
Direct replacements
| Old | Recommended | Notes |
|---|---|---|
| PowerFlex 70 | PowerFlex 753 | Same frame footprint |
| PowerFlex 700 | PowerFlex 755 | Integrated safety |
| PowerFlex 4/40 | PowerFlex 525 | Ethernet built-in |
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