AC Box (pre-assembled AC distribution box) is a ready-to-install protection and connection unit for grid-tied solar PV systems. It typically includes an AC surge protection device (lightning/overvoltage protection), fuses, and an AC circuit breaker for short-circuit and overcurrent protection. The enclosure is IP65-rated for outdoor use (water, dust, UV), and it helps simplify wiring, reduce connection points, and improve overall system reliability and maintainability.
