As renewable energy adoption rises across India, solar panels have become one of the fastest-growing sources of clean power. But behind every efficient solar installation are several critical electrical safety components.
Two of the most important among them are the ACDB (Alternating Current Distribution Box) and DCDB (Direct Current Distribution Box).
Understanding these components is essential for installers, project developers, and even end users who want a safe, long-lasting, and high-performing solar system. This article explains the role and importance of ACDB and DCDB, with insights aligned to the engineering expertise of Engineers & Engineers Electricals (ENEEPL)—a trusted manufacturer of ACDB, DCDB, and HT Panels for the PM KUSUM Scheme and various solar projects across India.
What is ACDB?
The ACDB (Alternating Current Distribution Box) is installed on the AC side of the solar system, after the inverter.
Functions of ACDB
• Distributes AC power from the inverter to the load or grid
• Protects the AC side using MCB/MCCB, surge protection devices, and isolators
• Ensures safe shutdown and maintenance
• Maintains stable AC power flow and prevents faults
Importance of ACDB
A high-quality ACDB ensures:
• Overload and short-circuit protection
• Smooth integration with building electrical systems
• Stable and reliable performance
• Increased safety for both users and equipment
Engineers & Engineers Electricals manufactures robust 800V ACDB panels widely used in solar pump systems, rooftop plants, and KUSUM projects.
What is DCDB?
The DCDB (Direct Current Distribution Box) is placed between the solar panels and the inverter.
Functions of DCDB
• Combines multiple solar panel strings
• Protects the DC side from surges and faults
• Provides safe shutdown and isolation
• Ensures stable DC power delivery to the inverter
Importance of DCDB
• Protects inverters from damage
• Enhances system safety
• Maximizes system performance
• Helps maintain long-term efficiency
ENEEPL supplies reliable DCDB units designed for outdoor conditions and large-scale solar applications, including KUSUM Yojna systems.
Types of ACDB and DCDB Systems
Engineers & Engineers Electricals offers engineered ACDB and DCDB units for all scales of solar installations.
ACDB Panels Available
• 4 IN 2 OUT
• 5 IN 2 OUT
• 6 IN 2 OUT
• 7 IN 2 OUT
• 8 IN 2 OUT
• 9 IN 2 OUT
• 10 IN 2 OUT
• Custom ACDB units for commercial and industrial Solar Panel plants
HT Panels Available
• 11kV ICOG
• 33kV ICOG
Applications
• PM KUSUM Scheme
• Solar water pumps
• Rooftop solar panel plants
• Industrial and commercial solar installations
With over 300 MW successfully delivered, ENEEPL is known for quality, durability, and timely supply.
ACDB and DCDB Installation Process
1. Site Survey and Planning
Assessment of shading, layout, electrical load, and ideal placement for ACDB and DCDB.
2. Component Installation
Solar modules, inverters, ACDB, and DCDB are installed as per the engineering layout.
3. Wiring and Connections
• DC wiring connects panels to DCDB
• Combined DC output flows to the inverter
• AC output from inverter connects to ACDB for distribution
4. Configuration and Testing
Includes inverter programming, surge protection testing, load balancing, and system safety checks.
5. Commissioning and Handover
System performance is validated, documentation is provided, and the solar system is handed over to the owner.
Final Thoughts
ACDB and DCDB are essential components of any safe and reliable solar installation. The DCDB manages and protects the DC side before the inverter, while the ACDB distributes and secures the AC output after the inverter. Together, they ensure safety, efficiency, long-lasting system performance, and compliance with solar panel project standards.
With proven experience and engineering expertise, Engineers & Engineers Electricals continues to be a leading supplier of ACDB, DCDB, and HT Panels for solar installations across India, especially under the KUSUM Yojna.
Contact Engineers & Engineers Electricals
Email: ee@eneepl.com
Phone: +91 95710 65555
Visit Now: https://eneepl.com/acdb-panel-solar/
