ACDB or AC Distribution box and DCDB or DC distribution box are essential parts of your solar power system. While the solar DCDB is meant to safeguard against faults and failures on the DC side, the ACDB is used to safeguard the system in the event of any failure on the load side.

What is ACDB?

The Alternating Current Distribution Box is referred to as ACDB. It is positioned between your home appliances and the solar inverter. Two of the many parts of an ACDB box are the most important.

• By earthing the high voltage, an AC Surge Protection Device (SPD) guards against power surges.
• In the event of high voltage, an AC MCB (Miniature Circuit Breaker) for low circuit current or an AC MCCB (Molded Case Circuit Breaker) for high circuit current trips and shuts off the circuit.

Types of ACDB:

• Ranges from 1-5KW for small scale applications to 500KW to 10MW for larger applications.
• Variations include 1in 1out, 2in 1out, up to 20in 1out configurations, catering to different system sizes and requirements.

What is DCDB?

Direct Current Distribution Box, or DCDB, is a device that is positioned between solar panels and an inverter. This box shields your solar inverter and panels from excessive voltage and short circuits.

• Role: Positioned between the solar panels and the inverter, protecting against over-voltage and short circuits.
• Key Components:
  • DC SPD (Surge Protection Device): For surge protection.
  • DC MCB (Miniature Circuit Breaker): Trips in the event of over-voltage.
  • Fuse: Closes the circuit during high voltages to prevent damage.
• Manufacturing Considerations: Includes protection against lightning surges, with features like polycarbonate enclosures for durability and PG plastic glands and MC4 connectors for cable management.
• Types of DCDB:
  • Options range from 1in 1out to 10in 10out configurations, accommodating various panel setups and system sizes.

Choosing ACDB and DCDB

When selecting an ACDB or DCDB, consider the system size, the specific requirements of your solar power setup, and the environmental conditions where the system will be installed. It’s crucial to ensure the product you choose has an adequate rating for your needs, such as an IP65 waterproof enclosure for outdoor installations, to provide the necessary strength and security against environmental factors.

These distribution boxes play a pivotal role in the efficiency and safety of a solar power system, making the selection of the right type and specifications critical for optimal performance and protection.

Here is a list of types of ACDB and DCDB:

• 1-5KW Solar ACDB
• 10-50KW Solar ACDB
• 50-1MW ACDB LT Panels
• 1in 1out DCDB ACDB
• 2in 2out DCDB
• 4in 4out DCDB
• 8in 8out DCDB
• 10in 10out DCDB
• 1in 1out ACDB up to 10KW
• 2in 1out ACDB up to 10KW
• 3in 1out ACDB up to 25KW
• 4in 1out ACDB up to 200KW
• 5in 1out ACDB up to 500KW
• 6in 1out ACDB up to 500KW
• 7in 1out to 20in 1out up to 4000A (500KW to 10MW)

The waterproof and dust-resistant materials used in the construction of both the ACDB and DCDB boxes provide them strength and security. Make sure the product has an IP65 waterproof enclosure before buying one of these junction boxes.

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