When using electrical circuits
in industrial, commercial and domestic operations, it is important to ensure they are protected from current surges (overcurrent). One of the top methods of protecting your system and devices from overcurrent is a cartridge fuse. The cartridge fuses
work by utilizing weak links (metal strips), which immediately melts down and breaks the electrical circuit in case of overloads. Therefore, these fuses act as types of light switches
that cut the current flow by melting the metallic strip.The cartridge fuses are designed with a cylindrical shape and contact end points. Then, a sensitive metal strip that can only carry specific quantity of current connects the two points. Most of the cartridge fuses are rated between 30 amps and 240 volts. These fuses can broadly be broken into two categories; ferrule and knife-blade models. The ferrule model fuses are cylindrical and are rated up to 60 amps. In the case of the knife-blade designs, the design is similar to the ferrule model, but they also feature a metal blade on each end. Knife-blade cartridge models fuses are common when people want to protect circuits from 60 amps to 600 amps.