Allen-Bradley 1336-PB-SP2C 74101-502-57 Circuit Board – Obsolete 1336 PLUS Spare Part

Technical Dossier

Product Details And Specifications

Allen-Bradley 1336-PB-SP2C 74101-502-57 Circuit Board – Obsolete 1336 PLUS Spare Part

RFQ support for obsolete parts: Send the model number, required quantity and destination so DriveKNMS can confirm sourcing options before quotation.

Technical Specifications

Note: Electrical parameters specific to this board revision are not published independently by Rockwell Automation. All compatibility verification is performed against the drive's original build sheet and firmware revision during our QA process.

Solving the Discontinued Hardware Crisis

The Allen-Bradley 1336 PLUS series was a dominant AC drive platform across North American and global manufacturing from the late 1980s through the 2000s. Thousands of units remain embedded in active production infrastructure — controlling compressors, conveyors, pumps, fans, and precision process lines — because the cost and disruption of replacing them outweighs any theoretical efficiency gain from newer hardware.

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.

Because Rockwell Automation no longer manufactures this component, procurement teams face a shrinking pool of options: the secondary market, decommissioned equipment, or a full drive upgrade. Each path carries risk. The secondary market is unverified. Decommissioned boards carry unknown service history. A full upgrade requires engineering resources most maintenance teams do not have on standby.

DriveKNMS sources, inspects, and holds RFQ-reviewed sourcing status of boards like the 1336-PB-SP2C precisely because the window between a fault alarm and a production shutdown is measured in hours, not weeks.

Extending Automation Asset Life by 5–10 Years: A Maintenance Strategy for Plant Management

For plant managers and reliability engineers facing pressure to retire legacy drive systems, the financial case for proactive spare parts management is straightforward. A single 1336 PLUS drive, properly maintained with verified replacement boards, can remain in productive service for an additional 5–10 years beyond its expected end-of-life. The strategy requires three disciplines:

1. Critical Spare Identification. Map every 1336 PLUS drive in your facility. Identify which boards — power interface, control, gate driver — are single points of failure with no cross-compatible substitute. The 1336-PB-SP2C is one such board. Holding one verified spare per drive, or per drive family, eliminates the sourcing delay that converts a board failure into a week-long outage.

3. Firmware and Configuration Documentation. Before any board swap, capture the drive's parameter set in full. On 1336 PLUS drives, parameters are stored in the control board, not the power board — but the replacement process creates an opportunity to verify and archive the full configuration. This documentation protects against knowledge loss when experienced technicians leave the facility.

Condition & Reliability Assurance

Every 1336-PB-SP2C board supplied by DriveKNMS passes a 5-step inspection protocol before dispatch review:

Step 1 – Visual and Physical Inspection. Full board examination for mechanical damage, burn marks, swollen or leaking components, and connector pin condition. Boards with physical damage are rejected at this stage.

Step 4 – Firmware and Revision Verification. Where applicable, the board revision marking is verified against the part number to confirm compatibility with the target drive configuration.

Step 5 – Functional Verification. Boards are bench-tested under controlled conditions prior to packaging. Only boards that pass all five steps are released for sale.

Key Features for System Maintenance

The 1336-PB-SP2C is a direct, drop-in replacement for the original board in compatible 1336 PLUS drives. Installation does not require drive reprogramming, parameter re-entry, or control board replacement. The drive's existing parameter set remains intact in the control board during a power board swap.

This means a qualified technician can complete the replacement without a controls engineer on-site, without a Rockwell Automation service contract, and without the multi-day commissioning process that accompanies a full drive replacement. The engineering cost of a board swap is measured in hours. The engineering cost of a drive replacement is measured in days or weeks.

For facilities managing tight maintenance budgets, this distinction is not a minor convenience. It is the difference between a planned maintenance event and an unbudgeted capital project.

How do I confirm this is a new or quality-refurbished unit?
Each board is individually inspected and documented through our 5-step QA process. Condition (new surplus or tested refurbished) is stated explicitly on the product listing and invoice. We do not mix condition grades within a single order without prior written agreement.

Can this board be used in other 1336 series drives?
Compatibility is specific to the 1336 PLUS (1336S) series. Cross-compatibility with other 1336 variants (1336 IMPACT, 1336 FORCE) should be verified against the target drive's documentation before installation. DriveKNMS can assist with compatibility verification on request.