RTPV special DC fuse is mainly used to break the line overload and short circuit current generated by the current feedback of the solar panel photovoltaic string and inverter that may be generated in the solar photovoltaic combiner box, so as to protect the photovoltaic module board. It can also be optionally used in any other DC circuit as the line overload and short circuit protection of electrical components. RTPV photovoltaic DC fuse is a circular tube, with variable cross-section conductor made of silver tape or pure copper tape inside. It is encapsulated in a high temperature resistant and high-strength ceramic tube, and filled with enough high silicon quartz sand as the filler to play the role of arc extinguishing medium. Rated voltage of RTPV photovoltaic DC fuse: DC1000V, Rated Current: 10A, use category: gPV, breaking capacity: 20KA, the fuse complies with IEC6069-1 GB13539.1; IEC60269-6 GB13539.2 standard.