Allen-Bradley 1746-OW16 16-Channel Relay Output Module

The Allen-Bradley 1746-OW16 is a sixteen-channel relay output module for SLC 500 PLC systems, a compact digital output option that provides relay-based switching for industrial control tasks. It mounts in a SLC 500 chassis and communicates via the backplane, allowing the PLC to control field devices from a centralized location. Each of the 16 electromechanical outputs is rated up to 2 A per channel and supports AC and DC switching loads, enabling direct control of devices such as motors, solenoids, contactors, lights, and other load elements. The module is commonly used to expand automation capabilities, upgrade control panels, and replace older relay output modules in manufacturing environments, packaging lines, conveyors, and material-handling equipment. It is compatible with Allen-Bradley SLC 500 controllers, and the 1746-OW16 sits among common replacements such as 1746-OW8 and 1746-OB16; Siemens 6ES7 322-1HF01-0AA0 is also listed as a related replacement. Operating temperature range is 0°C to 60°C.