The OFD4Z7 Series 1P (Single-Pole) miniature circuit breaker is an overcurrent protection device specifically designed for low-voltage terminal distribution circuits. Engineered and manufactured in strict accordance with international electrotechnical standards, its core function is to provide precise overload and short-circuit protection for single-phase wiring and electrical equipment. It effectively prevents equipment damage and electrical fire risks caused by line faults, serving as a fundamental component for ensuring the safe and reliable operation of the end-user segments of low-voltage distribution systems.