The SPF Solar Protection Fuse series has been specifically designed for photovoltaic (PV) systems. This family of midget fuses (10x38mm) can safely protect PV modules and their conductors from reverse overcurrent conditions despite the associated challenges of DC power.

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. With design voltages growing upwards of 1000VDC, standard midget fuses simply cannot handle this power. However, the SPF series is UL Recognized to safely interrupt circuits up to this demanding voltage level.

Littelfuse offers thirteen ampere ratings to match Designers’ specific requirements in applications including combiner boxes, inverters and battery charge controllers.