Littelfuse SPF (Solar Protection Fuse) 1000VDC Solar Fuses have been specifically designed for the ever increasing voltage requirements of photovoltaic (PV) systems. The SPF series is UL Recognized to safely interrupt circuits up to 1000VDC maximum. This family of midget fuses (10x38mm) safety protect PV modules and their conductors from reverse overcurrent conditions, despite the associated challenges of DC Power. The Littelfuse SPF 1000VDC Solar Fuses are available in ampere ratings ranging from 1 to 30 and feature a 20,000 kA interrupting rating. RoHS compliant and lead free.