Allen-Bradley 7300UIA1 UIA Contact Monitor Board

Allen-Bradley 7300UIA1 is an 115V AC contact monitor board in the Allen-Bradley 7300 Bulletin family. This UIA1 module is designed to supervise discrete input contacts within a 7300-based control system, providing monitoring of contact status for a backplane rather than acting as a primary controller. It monitors the state of field contacts—such as start/stop switches, limit switches, and interlocks—to detect open or closed conditions in control circuits and report that status to the 7300 I/O network. The 7300UIA1 is used in industrial automation contexts where reliable contact supervision is required without energizing or controlling the contact path itself. Verified attributes include an input rating of 115V AC, aligning with common control-circuit power supplies; the UIA1 designation identifies a dedicated contact-monitoring role within the 7300 family. When paired with other 7300-series interface boards, this module supports consistent wiring, signal levels, and backplane compatibility across the automation system. This description reflects the model commonly referenced as 7300-UIA-1, 115V contact monitor module, used to supervise discrete input conditions in 7300-based installations.