Model: 74101-774-54 1336T-MCB-SP518
Product Overview
Commercial availability is handled through direct RFQ, model verification and export-oriented follow-up rather than public cart checkout.
Datasheet Preview
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Commercial Path
Product pages on DRIVEKNMS are designed to verify model, brand and series first, then move the buyer into one clean quotation path.
Technical Dossier
The Allen-Bradley 1336 PLUS series is a family of AC variable frequency drives manufactured by Rockwell Automation. Deployed across global heavy industry — including petrochemical refineries, nuclear power auxiliary systems, offshore platforms, and continuous-process chemical plants — the 1336 PLUS platform established a benchmark for modular drive architecture in the 0.37 kW to 448 kW power range. Its distributed I/O structure, field-replaceable control boards, and standardized communication adapter slots made it the dominant installed base for industrial motor control throughout the 1990s and 2000s. Tens of thousands of units remain in active service, making spare part availability a critical operational concern for plant maintenance teams worldwide.
The 1336 PLUS series succeeded the original 1336 IMPACT and 1336 FORCE platforms, consolidating Rockwell Automation's AC drive lineup under a unified hardware chassis. The first-generation 1336 PLUS (catalog prefix 1336A) introduced a modular main control board (MCB) architecture, separating the power structure from the logic and I/O layers. This allowed field replacement of control electronics without disturbing the power section — a significant serviceability advance for the era.
The second generation, 1336 PLUS II (catalog prefix 1336B), introduced enhanced DSP-based vector control, expanded communication adapter compatibility (DeviceNet, ControlNet, Profibus-DP, Ethernet/IP via 1203-series adapters), and improved EMC filtering. The MCB architecture was retained but the firmware and ASIC layers were revised, making MCBs non-interchangeable between 1336 PLUS and 1336 PLUS II without firmware validation.
By 2010, Rockwell Automation had transitioned its primary drive platform to the PowerFlex 700 and PowerFlex 755 series. The 1336 PLUS and 1336 PLUS II were formally declared end-of-life, with last-time-buy windows closing between 2012 and 2015. The series is now in full obsolescence, with no new production. All maintenance is dependent on aftermarket spare parts, refurbished boards, and specialist repair services.
Compatibility note: 1336 PLUS (1336A) and 1336 PLUS II (1336B) share physical form factors in some modules but differ in firmware architecture. Cross-substitution requires engineering validation. The PowerFlex 700 is the recommended modern replacement for new installations.
Main Control Boards (MCB) — Drive Logic & Regulation
Power Interface & Gate Driver Boards
Communication Adapter Modules
Encoder & Feedback Modules
Dynamic Braking & Precharge
The 1336 PLUS MCB and gate driver boards operate in high-frequency switching environments with complex backplane communication between the logic and power sections. Standard visual inspection is insufficient to validate board functionality. DriveKNMS applies a structured test protocol to all 1336 PLUS spare modules prior to dispatch:
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Related Paths
Allen-Bradley 1336-PB-SP8C 1336-PB-SP14C 1336-PB-SP19C 1336-PB-SP23A 74101-181-51 is listed for 1336 PLUS Series RFQ review. Confirm quantity, condition and destination before quotation.
Allen-Bradley 1756-OB16E is listed for ControlLogix RFQ review. Confirm quantity, condition and destination before quotation.
Allen-Bradley 1336-L6/B is listed for Controller Cards RFQ review. Confirm quantity, condition and destination before quotation.
