A photovoltaic combiner box is a core device in a photovoltaic power generation system that connects the photovoltaic array and the inverter. Its main function is to provide primary current collection for the input of the photovoltaic array and to provide system protection and intelligent monitoring functions.

A photovoltaic (PV) grid-connected cabinet is a power distribution device used at the grid connection point of a PV power generation system (between the inverter and the grid)。