Allen-Bradley 1746-OA16 SLC 500 16-Channel 120/240 VAC Output Module

The Allen-Bradley 1746-OA16 is a 16-channel digital AC output module designed for the SLC 500 family, enabling centralized control of 120/240 VAC loads from an SLC 500 controller. Each channel switches AC power through a triac output, with a nominal 120/240 VAC operating category and an operating range of 85–264 VAC at 47–63 Hz, and the card is organized as two eight-channel banks to simplify wiring and addressing. The module plugs into a standard 1746 I/O rack and is intended for driving AC loads such as lighting, heating elements, and other line-powered equipment in industrial automation applications, from simple machines to process lines. Official SLC 500 documentation and migration references consistently list 1746-OA16 as the 120/240 VAC triac output option in the 1746 family, underscoring its role as the dedicated AC output stage within the platform.