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Introduction to Fuses

Fuses, as an important part of the safety components, are widely used in the circuit protection of various electrical and electronic equipments and play an important role in the operation and safety of the equipment. They are composed of a metal wire or metal strip, an insulating base, a support bracket, a fusible link, a metal cover, etc., and are widely used in instruments and meters, electronic products, telecommunications, power plants, automobiles, ships and other equipments.

3404.2345.11 Application Field and Working Principle

3404.2345.11 fuses are high voltage current limiting protective devices that can be added to off-the-shelf equipment. They provide the necessary protection for the electronic components, allowing the current to flow through the fusible elements only when the current reaches a preset value, and will break the current to protect the device, thus preventing permanent damage to the device.

The 3404.2345.11 fuse has a wide range of applications, from low voltage equipment to high voltage equipment. In the case of low voltage, it is usually used for the protection of DC electronic components, such as LCD/LED TV, computer boards, and telecommunication gear. In the case of high voltage, it can be used for the protection of AC circuitry, such as control circuits and motors.

In terms of working principle, the 3404.2345.11 fuse can be divided into two types, namely, thermal fuses and current fuses. Thermal fuses use the increase in temperature caused by the electrical current to open the contact, while current fuses use a core or coil to interact with current and electromagnetism to open the contact.

The thermal fuse works according to the principle of bimetallic temperaturesensitive action. When the current in the circuit increases to a predetermined value, the bimetal will expand due to the input of heat energy and rapidly cut off the current. The current fuse works according to the principle of current limiting action. When the current exceeds the rated current, the magnetic field generated by the current increases, which causes the core or coil inside the fuse to move and break the circuit.

Conclusion

To summarize, 3404.2345.11 fuses are high voltage current limiting protective devices, with a wide range of applications. It can be divided into thermal fuses and current fuses, which work according to different operating principles. The thermal fuse works based on the principle of bimetallic temperature-sensitive action while the current fuse works based on the principle of current limiting action. Thus, these fuses are often used in off-the-shelf equipment to strengthen the safety of the device while allowing the current to flow through.

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