Photovoltaic surge arrester box CSPV-DC is used in photovoltaic power generation systems, reducing the connection lines between photovoltaic modules and inverters. It is protected by photovoltaic-specific fuses, circuit breakers, and surge arresters, enhancing reliability and facilitating system maintenance. Users can connect a certain number of identical photovoltaic modules in series or a single module in series, then connect multiple series to the photovoltaic array surge arrester box. After being protected by surge arresters and circuit breakers, the output is convenient for connecting to the downstream inverter.