DCDB Box

Direct Current Distribution Box

The essential component for your solar power system that protects, manages, and optimizes DC power distribution.

DCDB Box

What is a DCDB Box?

A Direct Current Distribution Box (DCDB), also known as an Array Junction Box (AJB), is a critical component in a solar power system. It is installed between the solar panels and the inverter to manage and protect the direct current (DC) generated by the solar panels.

The DCDB combines the output of multiple solar panel strings into a single feed, providing surge protection and circuit isolation to safeguard the inverter and panels from high voltage or short circuits.

Why We Use DCDB?

Essential benefits for your solar power system

Protection

Protects solar panels and inverters from overcurrent, voltage surges, and short circuits using DC fuses, MCBs, and SPDs.

Power Management

Combines multiple DC inputs from solar panel strings into a single output for the inverter.

Safety

Ensures safe operation by isolating faulty circuits and preventing damage to expensive equipment.

Monitoring

Some DCDBs include monitoring systems to track DC performance and optimize energy production.

Types of DCDB

Solutions for every scale of solar installation

1-in-1-out DCDB
1-in-1-out DCDB

Suitable for small systems (1-5 kW) with one string and one Maximum Power Point Tracker (MPPT).

  • Ideal for residential rooftops
  • Compact design
  • Easy installation
2-in-2-out DCDB
2-in-2-out DCDB

Used for systems (5-10 kW) with two MPPTs and up to 10 PV modules per string.

  • Medium-sized installations
  • Dual MPPT tracking
  • Enhanced efficiency
4-in-4-out DCDB
4-in-4-out DCDB

For larger systems with multiple strings and higher DC input.

  • Commercial applications
  • Multiple string management
  • Advanced protection features
8-in-8-out DCDB
8-in-8-out DCDB

Used in commercial setups with extensive panel arrays.

  • Large commercial installations
  • High capacity power handling
  • Comprehensive monitoring options
Customized DCDB
Customized DCDB

Tailored for specific project requirements, available in 500V or 1000V ratings.

  • Bespoke solutions for unique projects
  • Configurable input/output options
  • Specialized protection schemes
Get in Touch

Ready to Optimize Your Solar System?

Our DCDB Boxes are designed to provide maximum protection and efficiency for your solar power system. Contact our experts today to find the right solution for your needs.

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Solar Engineer