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Fuses are common safety devices used in electrical and electronic circuitry. They prevent electrical shorts or overload currents from damaging sensitive components by automatically breaking the circuit. In 2060.0009.24, intelligent fuses are widely used in industries and households. This article will discuss the application field and working principle of these intelligent fuses.

In general, intelligent fuses are made of thermal conductive material with an embedded digital chip to sense temperature. They can rapidly detect an increase in current and immediately cut the power supply. Intelligent fuses are mainly used in computers, consumer electronics, motors, robotics, and medical equipment. By sensing the temperature of the fuses, the device can provide a warning and cut off the power automatically in time to avoid any potential harm to the equipment or surrounding environment.

Generally speaking, the working principle of intelligent fuses revolves around two elements -- resistance and electromotive force. When the fuse gets too hot due to overcurrent, the thermal conductive material contracts and the resistance increases significantly. This rapid rise in resistance brings about an increase in the electromotive force (EMF) around the element. In reaction, the chip senses the increased temperature and, in turn, the EMF. Once the EMF is stable, the chip will detect that the temperature of the fuse has increased beyond the threshold and initiate the shut off process.

For any electrical device or electronic circuit, the selection of an appropriate fuse is important to ensure its safety. Intelligent fuses with the built-in smart chip to monitor temperature are definitely becoming more and more popular for their additional safety benefits. They have improved trip time, capability and response — all of which make them an attractive choice for many businesses and households which require reliable electrical protection.

In conclusion, intelligent fuses have a wide range of application in both industrial and home settings. Their working principle revolves around two elements -- resistance and EMF -- that helps the chip sense the temperature increase of the fuse and respond to the situation rapidly. With improved trip time and response rate, these intelligent fuses are becoming an attractive choice for reliable electrical protection.

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