Cartridge Fuses

Types of Cartridge Fuses in Use

There are thousands of cartridge fuses available today. And, they come in every shape, size and amperage imaginable. There are the well-known fuses we use in our home. They include mini fuses which are available in four ratings. They are the smaller version of the plug top fuse. You will find them in clocks, shaver sockets and central heating programmers. The most popular fuses are the household fuses. Which, you will find in the plug top of almost every electrical appliance.

There is the glass ranges of quick acting, time delay and anti-surge fuses. They're used in sensitive electronic equipment. The continental bottle fuses are for control panels and industrial machinery. There is the heavy-duty range of offset tag fuses and central tag fuses. They are for protecting wiring circuits in commercial buildings. The motor rated fuses are for starting and protecting machinery. You will come across them in factories, warehouses and sometimes the home. (continued below)

Why use Cartridge Fuses

Cartridge fuses protect electrical circuits. They melt causing open circuit when passing a predetermined temperature. They are an essential safety device. They protect wiring circuits and printed circuit boards during short-circuiting or overloading.

When a fuse blows it will stop the current flowing. It will prevent damage or any further damage from occurring. It is important to remember that cartridge fuses blow for a reason. They blow for safety reasons. So, they should never get replaced, without testing the circuits they are protecting. Always consult a qualified electrician if you are in any doubt about the reason a fuse has blown.

Where to use Cartridge Fuses

In many instances, cartridge fuses got replaced by circuit breakers. But, cartridge fuses are still used. Although plug top fuses are the most common cartridge fuses. There are many other types of fuses in use. In fact, plug top fuses are only the tip of a very large iceberg. Because fuse links of one kind or another are used in almost every electrical circuit.

It is not always practical to use circuit breakers because of their physical size and rating. So, small and medium-size fuses are used. They are suitable for appliances, computer equipment, machinery and control panels.

There are many older electrical installations with fuses protecting them. Some of them have the protection of large industrial fuses. These range from 60A to 315A. They will fit into single and three phase distribution units. They are often used for the protection of sub-main circuits.


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