Allen-Bradley 1734-OB4E Digital Output Module

The Allen-Bradley 1734-OB4E is a four-channel 24V DC digital output module in the POINT I/O family that provides four sourcing outputs for controlling field devices from a POINT I/O backplane. Each channel is electronically protected with per-channel short-circuit protection and offers channel-level fault diagnostics to help identify a failed output without disrupting the remaining channels. As a protected output module, the 1734-OB4E plugs into a POINT I/O chassis and is designed to switch 24V DC loads under control of a Rockwell controller over the POINT I/O bus, enabling compact, modular automation architectures. This four-channel module is commonly used to actuate 24V DC devices in automated systems, including signaling, actuation, and other discrete switching tasks, while providing diagnostic visibility to simplify troubleshooting and maintenance in manufacturing environments. The OB4E designation emphasizes electronic protection, making it a robust choice for applications requiring reliable DC output signaling within a Rockwell Automation control system.