The OF10KA Series 3P (Three-Pole) miniature circuit breaker is a circuit protection device specifically designed for three-phase AC low-voltage distribution systems. Its core function is to provide complete and synchronized overload and short-circuit protection for three-phase loads. It utilizes a linked interruption mechanism to ensure the synchronous isolation of the three-phase power supply. It is a key component for safeguarding the safe operation of three-phase equipment such as motors and compressors, preventing damage caused by phase loss.