We are best Dealer in Solar String Combiner Box in Chennai. The String combiner box is a device that combines the output of multiple strings of PV modules for connection to the Inverter. There are several key elements to specifying or evaluating a string combiner box. The first element is the enclosure. The enclosure is often one of the more expensive components in the string combiner. The enclosure's mounting position, size and color directly affects the internal temperatures. Lighter colors typically absorb less solar radiation than darker colors.