Features IP65 Waterproof Shell: The combiner box is made of excellent plastic material, rust resistant and flame retardant, with IP65 waterproof grade, can be used in various environments, and the transparent cover is easy to check the internal condition. Surge Protector: The photovoltaic combiner box provides 20‑40KA surge protector for arrester protection, the green indicates normal operation, while red indicates thunder stroke that require timely replacement of the module. Main Purpose: This photovoltaic combiner box is suitable for photovoltaic grid connected and off grid solar power generation system, with arrester protection, anti reverse connection, and overload protection, making your solar panel system safe. 15A Rated Fuses: Built in 2 separate 15A rated fuses (10x38mm) to protect the PV solar panel and inverter, reduce the length of cables connecting the panel to the inverter, and increase the output power of the photovoltaic power generation system. Wide Application: This combiner box is the perfect device for outdoor installation and use, suitable for photovoltaic on and off grid solar power generation system, photovoltaic array, solar panel, RV solar system, 12V 24V 36V 48VDC photovoltaic solar energy. Specification: Item Type: PV Combiner Box Material: PC, ABS Input: 1 String Output: 1 String Maximum Voltage: 1000VDC Protection Rating: IP65 Impact Resistance: IK10 Cable Input: PG 2.5-6mm², PV 2.5-6mm² Cable Output: PG 2.5-6mm², PV 2.5-6mm² DC Surge Protector: Maximum Operating Voltage (Ucpv): 1000VDC Maximum Discharge Current: 40KA DC Fuse Holder: Rated Operating Voltage: 1000VDC Fuse: 10x38mm 10-30A (built in 15A, can be replaced by yourself) Size: Approx. 200 x 188 x 90mm / 7.9 x 7.4 x 3.5in Package List: 1 x Solar Combiner Box 4 x Screws 4 x Expansion Pipes 1 x User Manual Package List 1 x Solar Combiner Box 4 x Screws 4 x Expansion Pipes 1 x User Manual