Allen-Bradley 1492-IFM20F-F24A-2 Interface Module

Allen-Bradley 1492-IFM20F-F24A-2 is a 20-point fusible digital interface module (IFM) in the Rockwell 1492 wiring system, designed to bring 24 V field signals into a PLC with built‑in protection and straightforward wiring. It provides 20 digital input points protected by five 20 mm fuse clips, with dedicated input terminals to simplify field wiring, and it includes indicators to show when a fuse has blown, enabling rapid fault isolation in industrial environments. The module operates on a 24 V AC or DC supply and supports a maximum of 2 A per module, making it suitable for sensors and switches that draw modest current, while preserving the safety of the control circuit through the protective fuse network. Approved for common industrial safety standards, the 1492-IFM20F-F24A-2 carries UL, CSA, CE and Factory Mutual listings, reflecting its suitability for use in many control panels; a related variant, 1492-RIFM20F-F24A-2, uses a field-removable terminal block for easier maintenance.