Photovoltaic, or ‘PV’ as it is also known, refers to the technology that converts light directly into electricity. Electrical systems that convert the sun’s energy into electricity are very reliable as long as they are protected properly. Any solar installation is vulnerable to fault currents or lightning strikes. Today, fuses and surge arrestors are the most effective ways of protecting the wiring and all the electrical equipment in a photovoltaic system. The unique and specific nature of this protection has resulted in the creation of a whole new category of fuse products, known as Photovoltaic (PV) fuses. PV fuses are rated at 1000VDC and comply to the utilisation category ‘gPV’.