Mitsubishi Electric A1S55B Base Unit, 5-Slot Rack

Modular PLC base unit designed for mounting and interconnecting Mitsubishi MELSEC System A Series PLC modules. Model: A1S55B Manufacturer: Mitsubishi Electric Series: MELSEC System A Type: Base Unit / Backplane Slots: 5 module slots Power Supply Compatibility: Requires separate A Series PSU (e.g., A1S61PN, A1S62P, etc.) Bus Type: A Series system bus for power and signal distribution Mounting: Panel mount Connectors: Backplane edge connectors for signal/power distribution Supported Modules: CPU, I/O, communication, special function modules from the A Series Dimensions: Approx. 250 mm wide (varies slightly depending on terminal configuration) Applications: Factory automation, process control, machinery PLC integration Please review pictures carefully and let us know if you have any questions!