Keeping in mind the diverse requirements of our clients, we are manufactures ofDCDBof all sizes based on the requirement. We offer DC Distribution Boxes, our boxes range from closed to transparent types depending on the requriement. The Combiner Box is a device that combines the output of multiple strings of PV modules for connection to the inverter. It is typically used in the larger commercial and utility scale PV power plants. The Distribution Box commonly houses the input over current protection fuse assemblies for several strings, as well as the combined bus of those inputs into a single main output.