The SolarSpec™ Junction Box from Molex is available for sale to global manufacturers of mono- and poly-crystalline photovoltaic (PV) solar modules. Installed by the manufacturer directly on to the back of every PV panel produced, Junction Boxes serve as the interface between the conductor ribbons on the panel and the DC input and output cables.

Solar junction boxes contain bypass and blocking diodes to protect the PV panel from reverse current during hours of darkness, if the panels are in shade or if covered by debris (e.g. leaves). The SolarSpec Junction Box contains these diodes together with the DC cable connections in the "removable" top cover of the housing, thereby facilitating easy field repair or replacement in the event of damage or wear.

The SolarSpec Junction Box Assembly can be attached to the PV solar panel using robotic pick-and-place machines. Exclusively designed spring terminals to connect the base unit directly to the PV ribbon conductors, and terminals with optional Solder Charge Technology™ facilitate high-speed assembly and eliminate the need for manual intervention. An automated approach to production removes any process variation and risk of assembly errors whilst at the same time reducing costs associated with manual labour. Double-sided adhesive tape can also significantly reduce assembly cycles, since silicone curing time is not necessary before the panel can be further handled in production.