Replacement Stäubli solar connectors. The MC4 photovoltaic connector is the most used special connector in the solar photovoltaic power generation system, and it is an indispensable and important component of the solar power generation system.

solar pv connector are single-contact electrical connectors commonly used for connecting solar panels. The compatible products are universal in the solar market today, equipping almost all solar panels produced since about 2011.[citation needed] Originally rated for 600 V, newer versions are rated at 1500 V, which allows longer strings to be created.