Main Junction Box (MJB)

To provide a single output that may be linked directly to the DC Distribution Board (DCDB) or Power Conditioning Unit, a Main Junction Box (MJB) is used in the power plant to combine the numerous outputs from a number of Array Junction Boxes (Solar Inverter).

The Main Junction Box’s single output is one of its most crucial features.

Two bus bars make up the MJB. The positive terminals are combined using one, and the negative terminals are combined with the other.