PV fuse is a protective device used in photovoltaic systems, primarily for safeguarding photovoltaic panels and inverters.

In a photovoltaic system, the current generated by the solar panels passes through cables and connectors from the panels to the inverter, where it is ultimately utilized. PV fuses are installed at these critical points to protect the system from faults such as overcurrent and short circuits.

When there is an overcurrent in the system, the PV fuse interrupts the circuit, preventing the overload current from damaging the panels and inverters. Additionally, PV fuses serve to protect the system by preventing short-circuit currents from affecting the normal operation of the inverter when short circuits occur in the photovoltaic panels.