Allen-Bradley 1734-OB8S Digital Safety Output Module

Allen-Bradley 1734-OB8S POINT Guard I/O Safety Output Module is an eight-channel, 24 V DC safety-sourced output block for POINT I/O racks, designed to drive safety devices such as interlocks, guards, and safety relays in GuardLogix and POINT I/O safety applications. Each of the eight outputs can source up to 1 A at 24 V DC, with a combined module rating of 8 A (4 A per terminal base) at 40°C and built-in short‑circuit detection with electronic protection to quickly signal faults. The module operates on a supply range of 19.2–28.8 V DC and communicates via the POINTBus backplane, integrating with the broader POINT I/O safety network. Physical dimensions are about 77 mm high by 25 mm wide by 55 mm deep (without the terminal block), and it weighs roughly 62 g, making it a compact choice for space‑constrained safety circuits. With a safety-specific pulse timing characteristic featuring a 475 μs pulse width and 575 ms period, the OB8S provides fast, monitorable signaling suitable for controlling contactors and other safety devices while enabling rapid fault detection in safety-rated control systems.