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Fuses

Introduction

Fuse is a special electrical safety device used to protect the circuit. When the circuit current exceeds a certain value in the circuit, the fuse will quickly cut off the circuit to prevent the circuit from damaging or fire due to overload current and short circuit.

3404.0009.22 is a kind of fuse. It is often used in appliances. The rated current is 4A. The rated operating voltage is 250V, and it is suitable for AC50Hz. This type of fuse is more used in air conditioner, refrigerator, heater, oven, dryer and other electrical and electronic household appliances.

Structure and Material

This type of fuse shell is made of ceramic, which is mainly used for insulating protection in higher voltage. The central part is wrapped in a Nickel-chromium (Ni-Cr) alloy melting element, which acts as a contact and also acts as a current-carrying medium. Its functional parts are usually made of manganese-copper alloy and silver, which makes the melting body more securely mounted and not easily loose. The material of the fuse is more specific and different according to the different application occasions.

Working Principle

In daily use, when the fuse encounters a short-circuit fault or an overload fault, its internal temperature rises sharply, and when the temperature rises to a melting point, the Ni-Cr melting Elements melt, the current-carrying part also breaks, and the current-carrying path is cut off, thus protecting the circuit.

In addition, in the case of short circuit fault, the act of cutting off the current path can stop the flow of current to protect other circuit components from damage. When the external fault is eliminated, the fuse needs to be replaced. Otherwise, the fuse will not implement its protective function.

Application Field and Usage of 3404.0009.22 Fuse

3404.0009.22 Fuse is mainly used in household air conditioner, refrigerator, heater, oven, dryer, microwave oven and other electrical and electronic appliances. It is an indispensable component in electronic control system.

In addition to the above application field, 3404.0009.22 Fuse can also be used in power supply units, electromechanical electronic devices, high pressure hot wire of lighting transformers, single phase AC motors, multiphase AC motors, power distribution cabinets, power amplifiers, electronic toys, cable wiring protection, electrical tools, TV chassis, computers and other equipment.

The use of 3404.0009.22 Fuses requires special attention. First, the fuse with the same rated current must be selected correctly. Because the rated voltage and ampere of different rated products are different. Second, the fuse contacts need to be highly reliable without any loose phenomenon. Third, the fuse should be kept away from heat, water, shock, vibration and dust.

Conclusion

The 3404.0009.22 Fuse has an insulation casing made of ceramic material and is mainly used in air conditioners, refrigerators, heaters, ovens, dryers and other electrical and electronic appliances. It is an indispensable component in the electronic control system. This type of fuse is simple in structure, reliable in use, and easy to install. The working principle is to quickly cut off the current to protect the circuit when the circuit exceeds the specified current.

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