Allen-Bradley 1746-OA16 Output Module

The Allen-Bradley 1746-OA16 is a 16-channel AC output module for the SLC 500 family, delivering discrete AC control from a PLC backplane. Each of the 16 outputs uses a TRIAC to switch AC power to connected devices, enabling direct wiring of loads such as lighting or heating elements through the SLC 500 chassis. The module operates across an 85–265 VAC range and is rated up to 0.5 A per point, making it suitable for modest AC loads within the standard industrial control environment. It occupies a single backplane slot in a 1746-series rack and interfaces with compatible Allen-Bradley processors and I/O backplanes that support 1746 discrete output modules. When configuring a control scheme, ensure each output stays within the 0.5 A per-point limit and follow appropriate safety practices for AC control circuits, including proper isolation and compliance with local electrical codes. As part of the SLC 500 era’s discrete I/O options, the 1746-OA16 provides scalable 16-channel AC switching in a compact form factor for reliable automation tasks.