DCDB Provide Interconnection between the Solar PV modules and the output leads to the Solar Inverter. And DCDB Protect the Solar System if there is any fault during Failure in DC side. The DCDB is Customized for Different Configuration, based on the number of string of solar PV modules used in System. It also have SPD to save your system from any surge occurred due to fault or any other Phenomenon. DCDB also called AJB (Array solar junction box).