The Mersen HP15NH3L photovoltaic (PV) fuse series was specially designed for the protection of photovoltaic systems. HelioProtection HP15NH3L fuse links were developed to protect cables in photovoltaic groups in the event of a short circuit in a panel (main fuse category). This range of photovoltaic fuse links extends our product range of HelioProtection main fuses by a globally recognized standard size. These are fuses of the type gPV, which meet the IEC 60269-6 and UL 2579 photovoltaic requirements. The HP15NH photovoltaic fuse series is also available with screwed knives for direct mounting. This fuse base in an open design with screw fastening is suitable for NH2XL or NH3L fuse links and gPV fuse links size 122.