FWA-400B

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FWA-400B application field and working principle

FWA-400B is an electrical specialty fuse, essentially a low-voltage, high-current miniature component that forms an essential part of many electrical circuits. It functions by disconnecting the circuit at a predetermined current overload higher than the rated current, thus protecting the circuits from damage. It is mainly used in various industries, such as automotive, industrial, power distribution, telecommunications, and consumer appliances to provide current overload protection.

Features

FWA-400B is a cylindrical electrical fuse that is composed of a metal strip, a metal ring, and a metal cap. Its metal strip is designed to resist the surge of electric current. Its metal ring is designed to protect the metal strip from short circuits. Its metal cap is traditionally made of epoxy resin and has scratch-resistant and waterproof properties to protect the electrical circuit from deteriorating. It has an insertable ceramic body, which can add a variety of reliable protection functions to the circuit.

Applications

FWA-400B has a wide range of applications for power supply protection in the industrial, automotive, power distribution, telecommunications, and consumer appliance fields. The most typical application of this type of electrical fuse is for motor protection, circuit protection, and transformer protection. In the automotive field, it can be used as a protection component for automotive electrical equipment such as starters and generators.

Working Principle

When the current passing through an FWA-400B electrical fuse exceeds the rated current, the current flows through the fuse’s metal strip and generates heat. This heat is then transferred to the metal ring, and then to the metal cap. When the heat reaches a certain level, the metal strip will expand and eventually break. This will cut off the electric current, and the fuse will effectively be destroyed. This prevents current overloads, which can damage electrical components like motors and transformers.

Additionally, a fuse will also protect electrical circuits from damage caused by short circuits. When a short circuit occurs, the amount of electric current traveling through the fuse will be much higher than its rated current. The metal strip inside the fuse will instantly vaporize, thus creating an open circuit and preventing further damage to the electric circuit.

Advantages

FWA-400B electrical fuses are incredibly miniaturized power protection components, allowing them to be used in many different applications. They offer superior performance and reliability that cannot be provided by capacitors or other electrical components. Additionally, they are easy to use and install, and they are very cost-effective. They are also highly resistant to corrosion and provide consistent performance across a wide range of temperatures and climates.

Conclusion

FWA-400B is an electrical specialty fuse with a wide range of applications in the fields of automotive, industrial, power distribution, telecommunications, and consumer appliances. It is designed to provide current-overload protection, so that it can protect electrical components from damage caused by short circuits. It is a miniaturized power protection component that is highly reliable, easy to install, and cost-effective. Its properties, such as superior performance, corrosion resistance, and consistent performance across a wide range of temperatures, make it a popular and reliable choice for many different applications.

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