1、LIGHTNING PROTECTION: Solar combiner box with solar DC disconnect 10A fuse and fuse box, 63A circuit breaker and lightning arrester, lightning protection. 2、PLUG AND PLAY: 4 string solar combiner box with pre connected cables, very sturdy storage box to combine your solar panels, making it easier to connect your solar panel system. 3、NOTE FOR USE: 4 string PV combiner box can be connected to the combiner box as long as the current and voltage of the individual PV does not exceed 10A 250Vdc. 4、EASY TO INSTALL: 4 string solar combiner box with mounting clips, no key required to open and close the box, very easy to use, waterproof IP65 rating, suitable for any conventional cover. 5、PROTECTION: PV combiner box is equipped with PV special high voltage lightning arrester and 15A fuse and circuit breaker to provide short circuit fault protection and lightning protection We use 10AWG solar panel wire. Item Type: Solar Combiner Box Material: PC Connected PV Arrays ( Maximum Number): 4 Single PV Array Input Current ( Maximum): 10A Total Input Current of PV Array: 40A Maximum Input Voltage of Single PV Array: 250V Total Maximum Input Voltage of Photovoltaic Array: 1000V Protection Level: IP65 Operating Ambient Temperature: ‑30℃ to +70℃ Relative Humidity: 0‑95% Cooling Mode: Natural Cooling Surge Lightning Protection: Yes 1 x Solar Combiner Box 1 x Combination Lock 4 x Fixed Piece 4 x Screw 1 x Wrench 1 x Instruction Manual