The AC Distribution Box (ACDB) is a crucial component in a solar PV system that safely distributes AC power from the inverter to the grid or load. It provides overcurrent, short-circuit, and surge protection, while the No-Volt Release (NVR) system ensures safe shutdown during power failures, preventing unintentional restarts.
This ACDB is designed for 19–28 kW solar rooftop systems, built with high-quality components to meet MNRE and DISCOM guidelines.
AC MCB – 32A (3-Phase)
Provides protection against overload and short-circuit conditions.
Acts as the main disconnect for the AC side.
AC SPD – 3-Phase
Surge Protection Device to safeguard against voltage spikes and lightning surges.
Protects sensitive inverter and electrical components.
3-Phase Contactor – 32A with NVR
No-Volt Release (NVR) system automatically disconnects power in case of voltage failure.
Prevents unintentional restarts when power returns, ensuring operator safety.
Heavy-Duty Enclosure
Compact 280 × 280 mm weatherproof enclosure.
IP65-rated for outdoor use, dustproof and rainproof.
Powder-coated finish for long-term durability.
AC Input from Inverter →
Passes through AC SPD for surge protection →
Controlled by 32A Contactor with NVR →
AC MCB for overload/short-circuit protection →
Safe output to grid or load.
Rooftop Solar Power Plants (19–28 kW)
Commercial and Industrial solar installations
Grid-tied solar systems with net metering
Hybrid solar power systems
