Features This MC4 connector is specially designed for connecting solar PV systems with high mechanical requirements and extreme weather conditions. It is used for series wiring and is safe and ...Quick parallel connection of modules in solar PV systems and works best with 4mm and 6mm solar cables. IP67 Flammability rating: UL94-V0 Adapter cable: 4mm² - 6mm² Plug material: copper, tin Plug insulation material: PPO or PBT /> /> Connection force: less than or equal to 50N Removal force: greater than or equal to 50N Operating temperature range: -40~+105< br/> Connection: crimp < / p>