Reliance Electric 801420-72A DC Drive Control Circuit Board

Reliance Electric 801420-72A is a DC drive control circuit board that forms the core of the 0-57050 Process Line Kit. This printed circuit board (PCB) handles drive-control functions for coordinating speed and torque of DC motors in legacy Reliance Electric DC drive systems used on industrial process lines. The 0-57050 designation identifies the process line kit board, and 801420-72A is the circuit-board model that appears in repair catalogs and replacement listings for that kit. In practice, buyers typically encounter this part in refurbished or used condition as a direct replacement or repair option for equipment originally built by Reliance Electric (now part of Baldor/Reliance lineage). Common applications include retrofitting or repairing older process-line drives where DC motor control is required, making it a targeted spare for vintage Reliance drive assemblies. The product is described across repair-focused inventories and marketplaces as a 801420-72A PCB within the 0-57050 Process Line Kit system; users should verify exact compatibility with their drive model and kit configuration before purchase.