Overview
The Allen-Bradley 1492-IFM40F is a 40-pin digital interface module engineered for safe, reliable connections between field-side devices and Allen-Bradley PLC I/O modules. Part of the Bulletin 1492 wiring system family, the 1492-IFM40F reduces installation time, wiring errors, and maintenance overhead compared to traditional point-to-point terminal blocks. The interface modules are mounted onto standard DIN #3 rails, making them a compact choice for control panels and enclosures.
Key Features
- 40-pin configuration — industry-standard digital interface footprint for broad PLC module compatibility
- Reduced wiring time — pre-wired cables and terminal blocks eliminate stripping, routing, and manual termination labor
- Pre-tested connections — 100% accurate wiring and diagnostic-ready fuse and LED indication for faster troubleshooting
- DIN rail mounting — compact, space-efficient installation on standard DIN #3 rails
- Flexible voltage range — supports 0–132V AC/DC field devices
Technical Specifications
- Connector Type: 40-pin interface module
- Input Voltage: 0–132V AC/DC
- Maximum Current (Module): 12 Amps
- Maximum Current (Per Circuit): 2 Amps
- Recurring Peak Voltage: 600V
- Operating Temperature Range: 0–60°C
- Operating Humidity: 5–95% (non-condensing)
- Mounting: Standard DIN #3 Rail
- Series: A
- Manufacturer: Allen-Bradley (Rockwell Automation)
Typical Applications
- PLC I/O signal conditioning and isolation
- Field device interconnection in control panels
- Digital input/output module termination systems
- Industrial automation and process control wiring
- Machinery safety circuits and control logic implementation
- OEM panel assembly and system integration
Compatibility & Replacements
Compatible With
- Allen-Bradley PLC I/O modules (digital input and output)
- Bulletin 1492 pre-wired cable systems
- Standard DIN #3 rail enclosures
- Allen-Bradley control systems and ControlLogix platforms
Replaces / Drop-In Replacement For
The 1492-IFM40F is a Series A standard terminal block module. Specific replacement compatibility depends on voltage and current requirements. Verify compatibility with your system integrator before ordering. Related series variants include 1492-IFM40F-FS24-2, 1492-IFM40F-FS24-4, and other fusible module configurations for specialized applications.
Works With
- Allen-Bradley Studio 5000 Logix software
- RSLogix 500 and RSLogix 5000 programming platforms
- Bulletin 1492 pre-wired cable library and terminal block accessories
- ControlLogix, CompactLogix, and SLC 500 controllers
















