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Evidence-backed decisions for obsolete industrial parts

Allen-Bradley / Rockwell · VFD · 1336 PLUS II 380-480V drive (BRF75 rating class)

Allen-Bradley / Rockwell 1336F-BRF75-AA-EN

Discontinued (family obsolete)

Analysis reviewed: September 12, 2026

What should replace this part?

Two replacement options are documented: PowerFlex 753 family (manufacturer's primary direction) and PowerFlex 525 (conditional — check size against the 30 HP rule). This is a platform migration, not a drop-in swap.

Default to the PowerFlex 753; earn the 525 with the size check

Your options

PowerFlex 753 family — the manufacturer's direction
The 750-class platform for general-performance 1336 migrations, specified in Heavy Duty (150%) to match the 1336 overload the application already relies on.
PowerFlex 525 — only if the size check passes
The compact alternative the distributor strategy allows at or under 30 HP on 480V, with TB2/TB3 rewiring and a single-relay limitation. Measure the BRF75 against the rule before choosing it.

What will need to change?

HardwareThe 1336 frame, keypad, and enclosure layout give way to the 750 or 525 mechanical package. Re-check panel cutout, depth, and cooling for the chosen platform.
WiringControl terminations move to TB2/TB3-style wiring on the new drive, and the 525 path carries a single-relay limitation. Re-land every control wire against the new terminal map.
PowerSize the replacement in Heavy Duty (150%) overload to match 1336 behavior. A Normal Duty selection that matches nameplate amps still underserves the application.

For anything not listed here, check the replacement manual against your existing configuration.

Need help confirming this replacement?

Send us the part number and current setup for 1336F-BRF75-AA-EN. We'll help determine whether you need a replacement, repair, original-stock sourcing, or a migration.

Request a replacement review

Can I still buy the original?

Repair — Not confirmed for this exact modelUsed — Not confirmed for this exact modelRefurbished — Not confirmed for this exact model

We did not verify current new-original stock for this exact part.

Lifecycle

Status: Discontinued (family obsolete)

Discontinuation date: unknown

Lifecycle source · 20974581.fs1.hubspotusercontent-na1.net

Technical evidence

The recommendation above is based on the sources listed here. OEM source means the manufacturer published it; third-party source means a distributor, repair company or reseller states it. Confidence reflects how directly those sources support the recommendation: High — directly supported by manufacturer documentation. Medium — supported by family-level, secondary, or otherwise less-direct evidence. Low — limited or indirect evidence; verify independently before ordering.

OEM / manufacturer sources

OEM source Confidence: Medium Rockwell Automation guide PFLEX-AP007D via partner mirror (mirror of OEM) · 2022-04
The OEM modernization guide sends the general-performance 1336 CLASSIC, PLUS, and PLUS II line to the PowerFlex 753 drive.
Source excerpt“general-performance line ... recommend you migrate to the PowerFlex 753 drive”
View source · Note: Mirror-hosted OEM publication; direction only.
OEM source Confidence: Medium Rockwell Automation guide PFLEX-AP007D via partner mirror (mirror of OEM) · 2022-04
The guide's Table 4 of PLUS 380-480V ratings carries the BRF75 row.
Source excerpt“Table 4 p21: BRF75 rating row present in PLUS 380-480V ratings”
View source · Note: Rating row only; no per-catalog successor row.

Third-party sources

Third-party source Confidence: Medium Distributor modernization guide (Rexel USA)
The distributor strategy allows 1336 PLUS and PLUS II at or under 30 HP on 480V onto the PowerFlex 525, with TB2/TB3 rewiring and a single-relay limitation.
Source excerpt“1336 PLUS/PLUS II <=30HP 480V -> PowerFlex 525; TB2/TB3 rewiring + single-relay trap”
View source · Note: Size the BRF75 against the 30 HP rule before choosing the 525.
Third-party source Confidence: Low Industrial Monitor Direct
The independent guide requires the PowerFlex 750 in Heavy Duty at 150 percent to match 1336 overload, and calls Normal Duty insufficient.
Source excerpt“specify PF750 in Heavy Duty (150%) to match 1336 overload; Normal Duty insufficient”
View source · Note: Rating proviso that travels with the 753 direction.

Limitation: The modernization guide is mirror-hosted and gives direction without a per-catalog BRF75 mapping. The 525 branch depends on a distributor size rule, so the rating-table check against the 30 HP line is part of the purchase, not an afterthought.

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