3410.0027.02

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Fuses - 3410.0027.02 Application Field and Working Principle

Fuses are widely used in industrial, commercial and residential electrical systems to protect the circuits and components from overheating and other damages due to excessive current flow. The common types of fuses are tube fuses, cartridge fuses and blade fuses. The 3410.0027.02 type of fuses are specially designed for two purposes, one being to protect the wiring and devices by cutting power when a set over current occurs, and the other purpose is to allow reconfiguration of circuits by easy replacement of fuse elements.

Purpose of Fuses

Fuses provide a means of automatically interrupting an over-current condition, and thus protect the electrical wiring, components, and equipment from damage. Fuses, when properly selected, are intended to operate at minor overloads and/or short-circuits that occur due to a fault in an electrical system. Fuses are capable of providing quick interruption of the current flows.

3410.0027.02 Fuse Characteristics

The 3410.0027.02 fuse is designed with a temperature sensitive element (a pellet of special metal alloy that changes its characteristics when heated above a set temperature) and a fast-acting element (which is a length of coiled wire that contracts when current passes through it). The pellet is held in place by a metal holder and the wire is insulated by a tube of ceramic. The fuse has a current rating of 27A and is rated for a voltage of 250V AC. The fuse is 3.5 inches in length and 1.4 inches in diameter.

3410.0027.02 Application Field

The 3410.0027.02 fuse is mainly used in branch circuit protection installations. This type of fuse is usually installed in panel boards, switchgear and MCC’s, as well as equipment control panels and lighting circuits. It is also used in some sensitive electronic equipment to help protect against overcurrent conditions and provide the flexibility of reconfiguration of circuits by easy fuse element replacement.

3410.0027.02 Working Principle

When the current flow exceeds the rating of the fuse, the temperature inside the fuse element increases quickly due to the higher level of current. This, in turn, causes the metal alloy pellet to expand, breaking the electrical connection between the terminals. This results in an open circuit, thus preventing any further increase in current. The fast-acting element is designed to react faster than the thermal element allowing a quicker interruption in cases of severe over-currents.

Advantages

The main advantage of using 3410.0027.02 fuses is that they provide a faster reaction to over-currents than most other fuses. This makes them able to interrupt the excessive current and minimize any damage to the circuit. Furthermore, they are relatively easy to install and replace, which makes them more convenient for frequent reconfigurations.

Conclusion

The 3410.0027.02 type of fuse is designed for branch circuit protection and offers quick over-current protection. They provide the flexibility of reconfiguration of circuits by easy replacement of fuse elements. The main advantages of these fuses are that they offer faster reaction to excessive current and are relatively easy to install and replace.

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