Overview of Array Junction Box (AJB)

An Array Junction Box (AJB) is a vital component in solar photovoltaic (PV) power plants, designed to collect, combine, and safely distribute DC power generated from multiple solar PV strings. It acts as a centralized junction point that routes DC power efficiently toward downstream equipment such as DC Distribution Boards (DCDB) or inverters.

AAVAD Instrument Pvt. Ltd. manufactures standard and customized Array Junction Boxes engineered to meet diverse project requirements, ensuring safety, reliability, and long-term performance.

What is an Array Junction Box?

An Array Junction Box, also referred to as a DC Distribution Box, is used to combine the DC output of multiple solar panels or PV strings into a single output. This consolidated DC power is then transferred to the inverter or DCDB, minimizing wiring complexity and improving system efficiency.

Purpose of AJB in Solar Power Plants

The primary functions of an Array Junction Box include:

• Combining DC voltage from multiple solar PV strings

• Providing a safe transition point between solar panels and DCDB/inverter

• Reducing cable runs and installation costs

• Improving system organization and maintenance access

• Enhancing overall safety of the DC side of the solar plant