For the protection and isolation of photovoltaic battery modules or arrays for new energy photovoltaic system, the photovoltaic isolated secondary junction box, the isolation switch, DC distribution cabinet, DC side of the photovoltaic inverter, DC SPD protection and other suitable circuit system protection. This fuse series has features of high rated current, low power consumption, high breaking capacity, etc. This fuse series also has superior resistance to high altitude environment, excellent fusing characteristic and durability.