A junction box for electrically connecting a photovoltaic (PV) module to a power distribution system, the PV module having a plurality of conductors for electrically connecting the PV module to the junction box. The junction box includes a housing having a mounting side configured to be mounted on the PV module and a power transfer structure mounted within the housing. The power transfer structure includes a plurality of conductive connectors and a transfer interface. Each conductive connector forms an electrical interface to the PV module. The transfer interface couples the junction box to the power distribution system. The junction box also includes a user-removable control board mounted within the housing. The power transfer structure interfaces with said control board to convey power from the PV module to the control board.
