Littelfuse SPF020R - SPF SeriesThe SPF Solar Protection Fuse series has been specifically designed for the protection of photovoltaic (PV) systems. This family of Midget style fuses (10x38 mm) can safely protect PV (photovoltaic) modules and conductors from reverse overcurrent conditions. As PV systems have grown in size, so have the corresponding voltage requirements. This increase in system voltage has typically been intended to minimize power loss associated with long conductor runs. Standard circuit protection devices are not designed to completely protect photovoltaic panels. However, the SPF series is UL Listed to safely interrupt faulted circuits up to this demanding voltage level. Littelfuse offers 14 ampere ratings to match specific requirements in a variety of applications. Features and Benefits - Meets UL and IEC photovoltaic standards-UL 248-19 Listed 1000 V dc maximum-1–30 A ratings available-20,000 A Interrupting Rating - 1 A - 20 A 1-20-50,000 A Interrupting Rating - 25 A - 30 A-Both PCB mount and dead-front holder options available-Meets IEC 60269-6 electrical performance requirements - Applications - Inverters-Combiner boxes-Battery charge controllers