Allen-Bradley 1734-OB4K Point IO Output Module

The Allen-Bradley 1734-OB4K POINT I/O four-point digital output module provides four 24 V DC source outputs for compact, modular control in a POINT I/O rack. The “K” suffix denotes a conformal-coated version designed for harsher environments, offering reliable operation in conditions where moisture or contaminants are present. Each of the four channels has a dedicated output terminal, with a shared common terminal that is daisy-chained from the POINT I/O backplane or fed from a compatible source such as a POINT I/O adapter, 1734-FPD, 1734-EP24DC, or an external terminal block. This module is intended to switch 24 V DC loads—ideal for driving relays, solenoids, and similar discrete devices—within a scalable POINT I/O architecture. As part of the 1734 POINT I/O family, the OB4K integrates with the standard backplane interface for straightforward rack-wide configuration, diagnostics, and expansion, making it well suited for applications like small-to-moderate conveyor controls, machine-operator panels, and other compact automation tasks that require a rugged, parallel 4-channel digital output block.