EquipVector
Evidence-backed decisions for obsolete industrial parts

Allen-Bradley / Rockwell · VFD · 1336 PLUS II 480V drive (B020 33A rating code)

Allen-Bradley / Rockwell 1336F-B020-AA-EN

Discontinued (family obsolete)

Analysis reviewed: September 11, 2026

What should replace this part?

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

Use the 33 A nameplate rating to choose between the PowerFlex 753 and 525

Your options

Migrate to PowerFlex 753
Rockwell's stated direction for this drive line. Select the frame, Heavy Duty rating, and option cards for your application — the standard-duty rating alone may not match the original overload capacity.
Use PowerFlex 525 for 30 HP and under
A documented alternative for qualifying smaller applications. The wiring and software scope differ, and the single relay output needs attention in interlock circuits.
Repair the original
No repair listing was found for this exact model yet. If you want to explore repair, start from the nameplate data.

What will need to change?

Footprint / mountingThe PowerFlex frame mounts differently from the 1336. Compare the replacement frame against your enclosure before ordering.
WiringThe existing TB2/TB3 control wiring needs remapping to the PowerFlex I/O. Confirm whether your installation uses 2-wire or 3-wire control first.
I/OAnalog scaling has to be redone. On the 525, a single relay output replaces multiple outputs, so interlock wiring changes.
SoftwareDriveTools projects do not transfer. Re-enter the parameters in Connected Components Workbench.
AccessoriesOperator interface modules and cables change. Recheck line protection for the drive you choose.
CommunicationsSome legacy 20-COMM adapters work on the PowerFlex 755 within port and frame limits. Confirm whether that carries over to your chosen 753 or 525.

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-B020-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 · literature.rockwellautomation.com

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
Rockwell's publication moves the general-performance 1336 CLASSIC/PLUS/PLUS II drives to the PowerFlex 753.
Source excerpt“General-performance line ... recommend you migrate to the PowerFlex 753 drive (Ch.1 p11)”
View source · Note: Direction only, with no per-catalog mapping. Read from a mirror-hosted copy of the Rockwell publication.
OEM source Confidence: Medium Rockwell Automation guide PFLEX-AP007D via partner mirror (mirror of OEM) · 2022-04
B020 is a 33.0 A output rating code, and a BRF75 row exists in the 380–480 V ratings table.
Source excerpt“Table 2 p18: B020 33.0 Amp; Table 4 p21: BRF75 rating row present”
View source · Note: Ratings data only — it does not select the horsepower on its own.
OEM source Confidence: Low Rockwell Automation guide PFLEX-AP007D via partner mirror (mirror of OEM) · 2022-04
Most legacy 20-COMM adapters work with the PowerFlex 755, subject to port and frame limits.
Source excerpt“Ch.3 p184: 20-COMM adapters can be used with 755; Frame 1 Port 4 / Frames 2+ Port 6 rules”
View source · Note: This covers the 755 specifically. Whether it applies to a 753 choice is unconfirmed.

Third-party sources

Third-party source Confidence: Medium Rexel USA (authorized distributor) · 2019-03-26
A distributor strategy document moves 1336 PLUS and PLUS II drives at 30 HP, 480 V and below to the PowerFlex 525, including TB2/TB3 rewiring and the single-relay difference.
Source excerpt“<=30HP 480V 1336 PLUS(II) -> PF525 path; wiring checklist; one-relay-output trap”
View source · Note: Distributor guidance, not a Rockwell equivalence statement. The 525-versus-753 choice stays open.
Third-party source Confidence: Low Industrial Monitor Direct (independent technical publisher) · 2026-03-09
Size the PowerFlex 750 family in Heavy Duty (150%) to match the 1336 overload capacity. The Normal Duty rating is not enough.
Source excerpt“750-series Heavy Duty rating required to match 1336 150% overload”
View source · Note: A sizing rule worth checking against the PFLEX-AP007 publication.

Limitation: The per-catalog match is open: the 753 and 525 need different rework, and the Heavy Duty rating detail matters for overload capacity. Work from the nameplate before ordering.

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