The DC Distribution Box (DCDB) is an essential component in any solar PV system, providing a safe and organized pathway for DC power from solar PV strings to the inverter.

This 4-in/4-out DCDB is specifically designed for 31–40 kW rooftop or ground-mounted solar plants, ensuring reliable overcurrent and surge protection. Built with premium-quality 1000V DC SPDs and DC fuses, this unit guarantees safety, durability, and compliance with industry standards.

Key Components Included

1. DC SPD – 1000V (2 Nos.)

   • Surge protection against lightning strikes and transient overvoltages.

   • Type 2 SPD designed for solar PV systems, ensuring long-term protection.

2. DC Fuse – 20A, 1000V (4 Nos.)

   • Individual string protection to prevent damage from overcurrent.

   • Isolates faulty strings, ensuring other strings remain operational.

3. Terminal Blocks / MC4 Connectors (Optional)

   • Provides secure and convenient connections for incoming and outgoing DC cables.

4. Heavy-Duty Enclosure

   • Compact 280 × 280 mm weatherproof box.

   • Rust-proof, powder-coated finish suitable for outdoor environments.

   • IP65-rated for dust and water protection.

Functional Flow

• 4 Solar Inputs → DC Fuses (20A, 1000V) →

• DC SPDs (2 Nos.) for surge protection →

• 4 Safe Outputs to the solar inverter.