Combiner Box for Solar Panels: 6 String Configuration, Max current of single PV input array is 15A. Each String Continuous Duty Rated at 500 Vdc. Single PV input array installs with high voltage fuse, its function over-load protection. Anti-Backflow Diodes, Anti-Backflow & Anti-Reverse Protection.Professional high voltage breaker controls output, with anti-circuit protection and make the system more reliable, safety. This PV array combiner box includes Output Cable Glands & Safety Labels & Lightning/Surge Protection Module (1000V). PV Combiner Box