Allen-Bradley 1492-IFM40F-FS24A-4 Interface Module

The Allen-Bradley 1492-IFM40F-FS24A-4 Interface Module is a 40-point isolated fusible digital interface module (IFM) in Rockwell Automation's 1492 I/O Wiring System. It provides 40 digital input points with individual fusible protection via five 20 mm fuse clips and blown-fuse indicators to simplify fault isolation and maintenance. The module operates from a 24 V AC/DC supply and uses four terminals per input, enabling straightforward field wiring of discrete signals. Designed to isolate each input channel, it helps prevent fault propagation across channels and supports modular expansion of I/O in control cabinets. This unit is intended for use with Allen-Bradley 1492-series digital I/O configurations and is well-suited to monitoring devices such as pushbuttons, limit switches, and proximity sensors in industrial automation, where input protection and quick fault identification are essential for uptime and safety. Applications include manufacturing lines, packaging, material handling, and process automation where reliable per-input protection and easy fault diagnostics are required.