Allen-Bradley 1746-OX8 Discrete Output Module

The Allen-Bradley 1746-OX8 is an eight-point, isolated-relay discrete output module for the SLC 500 system. Each of its eight relay contacts provides galvanic isolation from the backplane and is suitable for switching AC or DC loads, making it a common choice for controlling solenoids, relays, indicators, and other field devices in industrial automation. Per-channel voltage ratings span 5-250 VAC or 5-125 VDC, giving flexibility to drive a range of devices within that VAC/VDC window. The 1746-OX8 is designed to slot into a 1746 I/O backplane in compatible SLC 500 chassis and works with standard Allen-Bradley discrete I/O wiring practices, enabling straightforward integration with AB controllers for scalable, modular control. Isolated outputs help protect the controller from fault conditions and cross-talk between channels, which is important in mixed-load environments. Typical applications include machines and manufacturing lines that require independent on/off control of solenoids, relays, or indicators, all managed from a single PLC I/O module.