Allen-Bradley 1492-IFM40F-FS24-4 Digital Input Module

The Allen-Bradley 1492-IFM40F-FS24-4 is a 40-point isolated fusible digital input module designed for use in Rockwell Automation 1492 wiring systems. It employs 5 x 20 mm fuse clips and provides four terminals per input channel, delivering fused protection for each digital signal while keeping channels electrically isolated from one another. Powered by 24 V (AC or DC), the FS24-4 variant includes blown fuse indicators to simplify field diagnostics and fault isolation on busy control panels. As a digital interface module (IFM), it expands control-system I/O by converting sensor and switch closures into isolated digital inputs that feed the controller, typically used for monitoring pushbuttons, limit switches, photoelectric and proximity sensors on conveyors, packaging lines, and other automated machinery. The 40 input points are intended for robust wiring and straightforward maintenance, aligning with Allen-Bradley 1492 connection devices and compatible 1492-compatible controllers in mid-to-large automation environments.