As solar power continues to revolutionize the energy landscape across industries, the importance of choosing the right ACDB (AC Distribution Board) and DCDB (DC Distribution Board) panels becomes undeniable. Whether you’re installing a 5kW rooftop solar system or managing a 1MW industrial solar plant, proper panel selection ensures maximum safety, reliability, and energy efficiency.
In this guide, we’ll break down the sizing, technical parameters, and smart considerations for selecting ACDB/DCDB panels for solar systems, while highlighting how Synchro Electricals leads as a top ACDB/DCDB panel manufacturer in India.
Understanding ACDB and DCDB Panels in Solar Systems
ACDB (AC Distribution Board) and DCDB (DC Distribution Board) panels are critical junctions in a solar power system.
- DCDB: Connects multiple solar panel strings and channels their DC output to the inverter. It includes DC MCBs, SPD, fuses, and disconnects to protect against overcurrent and surges.
- ACDB: Receives AC output from the inverter and feeds it to the load or utility grid. It incorporates AC MCBs, isolators, SPD, and energy meters for safety and monitoring.
Together, these panels form the solar panel protection box—safeguarding both components and personnel.
How to Size ACDB/DCDB Panels from 5kW to 1MW
For 5kW to 10kW Solar Systems (Residential/Small Commercial)
- DCDB Box for 5kW Solar System:
- Input Strings: 1 to 2
- Voltage Rating: 600V–1000V DC
- Protection: DC MCB, Fuse Holders, Surge Protection Device (SPD), DC Disconnect
- Cable Entry: Cable glands suitable for 4–6 mm² PV cable
- ACDB for 10kW Solar System:
- Output Voltage: 230V/415V AC
- Key Components: AC MCB, SPD, Energy Meter, Isolator
- Enclosure: Weatherproof polycarbonate or powder-coated metal
These smaller systems benefit from compact ACDB/DCDB boxes, engineered for cost-effectiveness and ease of installation.
For 50kW to 100kW Solar Systems (Medium Industrial/EPC Projects)
- DCDB Sizing:
- Input Strings: 6–12
- Voltage Rating: 1000V DC
- Components: SPD Type II, String Monitoring, Disconnect Switches
- ACDB Sizing:
- Output Voltage: 415V AC (3-phase)
- Inbuilt Energy Meters for Load/Export Monitoring
- Cable Support: 16mm² to 70mm² AC cables
- Ideal for: Solar EPC companies, MSMEs, educational institutions
At this scale, having custom-built DCDBs and ACDBs with accurate string tracking and load balancing is essential.
For 500kW to 1MW Solar Plants (Utility/Industrial)
- DCDB for 1MW Solar Plant:
- Input Strings: 20+
- Voltage: 1000V–1500V DC
- Surge Protection: Type I & II SPDs
- Busbar Rating: 250A–400A Copper/Aluminium
- Monitoring: Optional SCADA integration, individual string monitoring
- ACDB for Industrial Solar:
- 3-phase 415V output
- Inbuilt MCCB (Moulded Case Circuit Breakers), CTs, and metering
- Integration: Synchronization panels, utility metering
- Material: IP65-rated enclosures, indoor/outdoor application
Industrial solar systems demand rugged ACDB & DCDB panel assemblies—built for load fluctuation and adverse conditions.
Why Sizing Accuracy Matters
Improperly sized or substandard ACDB/DCDB panels can lead to:
- Overheating and equipment failure
- Energy loss due to voltage drop
- Inadequate protection against lightning and faults
- Warranty voids on solar inverters/modules
This is why working with an experienced solar ACDB DCDB manufacturer is crucial to ensuring safety and long-term ROI.
What Makes Synchro Electricals a Trusted Manufacturer?
At Synchro Electricals, we’re not just another ACDB/DCDB panel manufacturer—we’re your partner in clean energy excellence.
Certified Quality
All our solar panels and components are certified, rigorously tested for safety, insulation, and environmental conditions.
Full Product Range
We’re among the top solar panel protection box suppliers and PV junction box manufacturers in India—serving residential to 1MW+ systems.
Tailored Engineering
From a DCDB box for 5kW systems to ACDB panels for 1MW solar EPCs, we customize every enclosure for cable size, voltage ratings, and busbar capacities.
Made in India
Proudly built in India, our ACDB/DCDB products offer global standards with cost-efficiency for EPCs, OEMs, and industrial solar developers.
Final Thoughts
Whether you’re setting up a 5kW rooftop project or a large-scale 1MW solar farm, selecting the right ACDB/DCDB box isn’t just about capacity—it’s about performance, safety, and long-term durability.
With decades of electrical expertise, Synchro Electricals delivers technically superior ACDB and DCDB panels, fully compliant with modern solar infrastructure requirements.
Need help choosing the right panel for your solar project?
Talk to Synchro Electricals today—India’s leading solar ACDB DCDB manufacturer for industries, EPCs, and OEMs.