1、MAIN PURPOSE: 500V solar photovoltaic DC disconnect switch combiner box, installed between solar panels and solar inverters, plug and play. 2、CIRCUIT PROTECTION: With overvoltage, overload, and thunder protection function, capable of long distance comm, and has a long service life. 3、HIGH RELIABILITY: Equipped with reliable DC components to protect the PV disconnect switch, transparent cover for easy checking of the breaker status. 4、IP65 WATERPROOF: This combiner box has an IP65 waterproof grade, allowing for indoor and outdoor installation, can be used in harsh weather environments. 5、WIDE APPLICATION: This photovoltaic disconnect switch is suitable for photovoltaic solar panel on and off grid systems, solar power generation systems, RVs, etc. Item Type: 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 Disconnect Switch 4 x Connectors  (2 x Male, 2 x Female) 4 x Cores 4 x Screws 4 x Expansion Tubes 1 x PV Special Wrench 4 x Plugs 1 x User Manual