Allen-Bradley ACU132 Automatic Transfer Switch Controller

The Allen-Bradley ACU132 Automatic Transfer Switch Controller is a panel-mounted electronic control module that automates switching between utility and generator power in ATS systems. It continuously monitors voltage, frequency, and source availability, applying programmable time delays to control start, transfer, and return sequences, and supports Automatic, Manual, and Test operating modes. The input voltage range is typically 110–240 VAC depending on configuration and installation setup, and it is designed for two-source utility plus generator configurations in generator backup, industrial power distribution panels, commercial facilities, telecom infrastructure, and other critical-load applications. Protection functions include over/under voltage, frequency deviation, and phase sequence monitoring (variant dependent), with optional external signaling for communication.