Every serious appliance begins with a fuse, a means of protecting man and the appliance itself from unwanted damage. This article will give you an overview of the electrical fuse because, despite its simplicity, the electrical fuse plays a huge role. In some circuits it is simply indispensable, and it is vitally important for a novice radio amateur to know about it.

The simplest means of protecting the device from short circuits:

An electric fuse is an electronic component that works according to the “where it’s thin, it’s torn” principle, designed to break an electrical circuit when it exceeds the rated current for which it was designed.

The electrical fuse performs a protective function by preventing the device from overheating and igniting (burning itself out in the process).

Types of fuses:

Typically, an electric fuse is a single-use fusible link Figure №1.

Figure 1 – Fuse, A – intact, B – already triggered

Self-resetting fuses or multiple fuses can be used for multiple circuit protection. Generally, fuses are selected according to the rated current flowing in the circuit. The adequacy of the fuse selection plays a key role in protecting the appliance from failure. So don’t skimp on the fuse if you don’t want unfortunate consequences.

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