ABB 3AUA0000036521 RDCU-12C Control Board

ABB RDCU-12C control board (Part Number 3AUA0000036521) provides the main control logic and drive processing for ABB ASC800 inverters, serving as the centralized processor within the ASC800 drive platform. It is commonly installed in variable-frequency drives controlling pumps, fans, conveyors, and heavy machinery where centralized control, monitoring, and system coordination are required. This internal, drive-mounted printed circuit board is powered by the drive system bus and supports integrated drive communications; compatibility is specific to ABB ASC800 series inverters (model dependent). It is designed for industrial-rated operating conditions and is installed within a protected drive enclosure. Common replacements include ABB RDCU-02C, RDCU-22C, and RDCO-01C.