The Mitsubishi Fx3u Series is the third generation of the compact PLC family, built for international markets with a dedicated second adapter bus that supports up to ten additional modules alongside the existing expansion bus for special function and network modules. Output type is relay, making it a straightforward choice for switching AC or DC loads where isolation per channel matters and switching speed is not critical. Mounts on DIN rail, so it snaps into any standard panel without drilling — fits the 182 x 90 x 86 mm footprint.
Sourcing & Lifecycle
Lifecycle stage is marked mature, which means it is no longer in active new-product introduction but remains available through distribution channels for ongoing BOM support. For a mature part like this, sourcing is best handled via an RFQ — we can confirm current availability and lead time against your quantity. No official successor is listed in the record, so the Fx3u Series is the direct fit for existing designs.
Key Ratings & Fit
The OFF input sensitivity of 1.5 mA means the input circuit reliably detects an OFF state when leakage current drops below that threshold — important when wiring to sensors with residual leakage or long cable runs. Dimensions of 182 x 90 x 86 mm define the panel space required; verify clearance for the adapter bus modules if you plan to populate the full ten-slot expansion.