1、MAIN PURPOSE: 500V solar photovoltaic DC combiner box, installed between the solar panel and the solar inverter, with 1 string input and output. 2、APPLICABLE CABLE: This DC disconnect switch supports plug and play, suitable for cables with a diameter of 4-6mm, 13-10 AWG cables, and 4-6mm² cables. 3、GOOD PROTECTION: With overvoltage, overload, and thunder protection function, capable of long distance comm and extending the working life of solar system. 4、EXCELLENT PARTS: Equipped with reliable DC components for maximum protection of PV DC disconnect switch, transparent cover for easy detection of circuit breaker status. 5、IP65 WATERPROOF: The distribution box has an IP65 waterproof grade, allowing for indoor and outdoor installation, providing effective protection in harsh environments. 6、WIDE APPLICATION: Suitable for photovoltaic solar panel grid connected system, solar off grid system, solar power generation system, photovoltaic array, etc. Item Type: DC Disconnect Switch Material: Polycarbonate, ABS Input: 1 String Output: 1 String Maximum Voltage: 500V Protection Level: IP65 Cable Input Port: 4mm² Output Cable Gland: 4mm² DC Circuit Breaker: Rated Insulation Voltage (Ui): 500V Maximum Working Voltage (Ucpv): 500V Rated Working Voltage: 500V 1 x DC Disconnect Switch 2 x Waterproof Joints 4 x Connectors  (2 x Male, 2 x Female) 4 x Connectors with Cable (2 x Male, 2 x Female) 4 x Cores 4 x Screws 4 x Expansion Tubes 1 x Electrical Tape 1 x PV Special Wrench 1 x User Manual