The ABB A12‑30‑10 is a three‑pole electromechanical AC contactor from ABB’s A‑line series, designed for switching and controlling three‑phase motors and general power circuits. It features a compact design with screw terminals and is suitable for use with thermal overload relays and auxiliary contact blocks to form complete motor starter assemblies. This model is configured with a 110 V AC (50 Hz) / 110–120 V AC (60 Hz) coil for industrial control and automation applications