The O-57406-H drive controller (part number 0-57406-H) is a Reliance Electric distributed control system module used to manage motor drive operations in industrial automation. Reliance Electric has discontinued this drive controller, and it is commonly sold as a used or refurbished unit by third‑party distributors. Typical applications include legacy motor control within older automation architectures that used Reliance Electric or Allen‑Bradley drive controllers, with specialty distributors frequently stocking this model.
