The AC Distribution Board (ACDB) is a key protection and control panel used on the AC side of solar photovoltaic (PV) systems, industrial power systems, and commercial electrical setups. It safely distributes AC power from the inverter or main source to the loads or grid while ensuring proper safety, isolation, and surge protection.

This specific ACDB is rated for 63 Amps and is designed for three-phase (3Ph) systems, making it suitable for large commercial or industrial installations up to 40–42 kW.

The ACDB includes a No Volt Release (NVR) feature, which prevents equipment from automatically restarting after a power failure. When power is restored, the system must be manually re-energized, ensuring operator safety and preventing equipment damage due to sudden surges.