Solarix DC Surge Protector Device – Designed To Protect And Minimize The Potential Impact Of Direct And Indirect Lightning Events on Solar Panels PV Installations, Should Be Installed On The DC Side Of The PV System, Before The Inverter, Widely Used In PV DC Combiner Box, Inverter, Controller And PV DC Cabinet, Please Do Not Use Install It With AC Circuits, Ensure Proper Earthing When Installing, Din Rail Mount Installation, Retail Box, No warranty