39602000000 Circuit Protection

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Fuses are components in electrical systems thus lots of application fields of the fuses. It is generally used in protecting the electrical circuits which consists of the electric equipment, such as electrical machines, conductors and other parts of the circuit from the excessive current and overloads.Fuses, which was invented by Sir Issac Newton, are devices designed to interrupt an electric circuit which contains too much electricity for it to handle. When too much electricity passes through a fuse wire, it melts and the electric circuit is broken. This prevents the circuit from overheating and affecting other components. Fuses are commonly used in automobile circuits, appliances, and industrial equipment.

The working principle of the fuse is based on the alloys materials. When there is a current pass through the fuse wire, it would generate heat. The heat would cause the alloy to expand and the fuse wire to break when it become too hot. Fuses usually has limit ratings for currents so the metals need to be set to certain properties so that it can blow when it’s overheated.

The materials used in manufacturing a fuse must have high melting point and low resistivity .Metallic materials such as copper, brass, nickel, aluminum and aluminum alloys are used as the fuse material. Fuse are made from different metals depending upon the application for example some materials is suitable for ac operations and some even work up to 1000 Amp incase is short circuit.

Fuse often works as a self-resettable device because the fuse wire will re-establish connection once the excessive current is removed. This aspect means the fuse can be removed and reinserted after the situation is solved in order for electricity to flow normally.

Fuse indeed has a very varied field of application. It commonly used for low voltage circuit, which may found on almost all household electronic appliances such as television sets, washing machines and air-conditioners; medium-voltage circuit, which are widely used in industrial transformer and supplying power for properties, shopping malls and apartment blocks; and high voltage circuit, which can be found in power transmission lines and electric networks. In each application, it helps to limit the current flow to a minimal level so as to not cause damage to the circuits and electric components.

To sum up, the 39602000000 application field and working principle of a fuse is that it is mainly used to protect electrical circuits from excessive current and overloads. Its working mechanism is based on using alloys which would expand when overheated and break the electric circuit. Fuse has a broad application field ranging from low voltage circuits to high voltage circuits and is a self-resettable device that can be removed and re-inserted after the situation is solved.

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