Allen-Bradley 634484A-90 Printed Circuit Board

Allen-Bradley 634484A-90 is a REV-7 printed circuit board (PCB) from Rockwell Automation, designed as an interface/control board used in legacy Allen-Bradley equipment. The part is cataloged in some listings as 634484-90, with 634484A-90 appearing as an alternate designation within the same product family. This circuit board assembly carries the interconnections and routing that enable subsystems to communicate with the main controller, and it is intended for installation in compatible Allen-Bradley control panels. REV-7 denotes the revision level commonly encountered for this model, reflecting a specific layout of components and circuitry used in this version. Because this is an age-specific, standalone board, exact compatibility is highly dependent on the original equipment model and chassis; verify fit by comparing connector types and mounting geometry to your unit’s documentation or to a known-good spare. This PCB serves as a replacement part for service and repair of older Rockwell Automation installations, offering a way to maintain legacy systems without replacing the entire control assembly.