The ABB CR‑MX230AC4L (part number: 1SVR405633R3100) is a pluggable interface relay from ABB’s CR‑MX miniature relay range. It functions as an electromechanical interface relay that provides electrical isolation and signal switching between a 230 V AC control input and multiple output circuits. The relay is designed for industrial control panels and automation systems where it interfaces logic‑level control (e.g., PLCs, sensors, or control switches) with larger external loads. This version includes four changeover (SPDT) contacts and a built‑in LED indicator to show when the relay coil is energized, simplifying troubleshooting and status indication.
