CARTRIDGE FUSE

 CARTRIDGE FUSE

The cartridge fuse operates exactly like the plug-type fuse. 

In the cartridge fuse, the fuse link is
enclosed in a tube of insulating material with metal ferrules at each end (for contact with the fuse holder).

Some common insulating materials are glass, bakelite, or a fiber tube filled with insulating powder.


Figure shows a glass-tube fuse. 

In figure view A, notice the fuse link and the metal ferrules.

Figure  view B, shows a glass-tube fuse that is open. 
The open fuse link could appear either of the ways shown in figure view B.

Cartridge fuses are available in a variety of physical sizes and are used in many different circuit applications. 

They can be rated at voltages up to 10,000 volts and have current ratings of from 1/500 (.002) ampere to 800 amperes. 

Cartridge fuses may also be used to protect against excessive heat and open at temperatures of from 165° F to 410°F (74°C to 210°C).

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