Ferraz Shawmut - Mersen 1000Vdc Photovoltaic Fuses and Accessories Engineered to Protect in Photovoltaic Applications. Mersen offer a range of photovoltaic fuses and fuse holders that are designed specifically for this application. This range benefits from enhanced fuse construction which allow for continuous temperature and current cycling withstand.Protect your off-grid and grid tied PV systems using Mersen's Photovoltaic fuses. Applications: PV string/array level protection Combiner box applications In-Line PV module protection. Inverters Battery Charge Controllers. Low Fault current interrupting capability Durable Construction. Temperature cycle withstand capability. Guaranteed operation at temperature extremes. Note Modulostar Fuse holders recommendations. Do not Operate under load. The PV source must be connected to the upstream termina. Photovoltaic Fuses and Accessories