This series of high-voltage fuses can be used for 50 hz/63 hz indoor systems, with rated voltages of 3.6 KV, 7.2 KV, 24 KV, 40.5 KV, etc. They are generally used together with other switchgear (such as load switches, vacuum contactors), and can also be installed with bases to protect transformers and other electrical and gas equipment from overload or open circuit. It is also an essential accessory of high-voltage switch box, ring circuit cabinet, high and low voltage top load transformer substation.