Mitsubishi Electric FX3U-4LC Programmable Logic Controller Module

The Mitsubishi Electric FX3U-4LC is an expansion unit for FX3U PLCs that adds four discrete transistor outputs to extend a controller’s ability to drive field devices. Operating at 24 VDC, each of the four outputs is a transistor channel (NPN/PNP dependent on system configuration) with field-terminal screw wiring and LED indicators to confirm on/off status. Mount this module in the FX3U base rack slot for I/O expansion in manufacturing and process environments, with common uses including conveyors, packaging machinery, material handling, automated assembly lines, and stand-alone machines that require additional outputs to drive actuators, solenoids, indicators, or small DC loads. Protection includes transient suppression (platform dependent), and it remains compatible with Mitsubishi FX3U series PLCs; a common cross-reference is the Allen-Bradley 1734-OB4.