PFRT.008.250.U

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Introduction

PTC Resettable Fuses, also referred to as Polymeric Positive Temperature Coefficient (PPTC) Fuses, are inexpensive circuit protection devices which offer reset capability and are capable of withstanding high currents. The PFRT.008.250.U Resettable Fuse is one of the most popular resettable fuses on the market, and is used in a variety of applications. This article will discuss the application field and working principle of the PFRT.008.250.U.

Application Field

The PFRT.008.250.U Resettable Fuse has wide range of application in consumer electronics, telecommunications, automotive, industrial equipment and medical devices. It is commonly used in power supplies, motherboards, hard disks, device chargers, surge protectors and electrical outlets. It can be used to provide over-current protection for various types of electrical circuits, and is often used as an alternative to traditional fuses. Additionally, it can be used to provide protection against over-temperature and over-voltage.

In automotive applications, the PFRT.008.250.U can be used in a variety of ways. It can be used to protect against over-voltage and over-temperature situations, and it can also protect sensitive electrical components from damage. It is typically used in electrical circuits such as alternator and battery charging circuits, and its reset capability makes it ideal for such systems. Additionally, it can be used in auto-stop/start systems to provide protection against over-current.

The PFRT.008.250.U is also used in a variety of industrial and medical applications. Its ability to provide over-current protection makes it ideal for protecting sensitive equipment from damaging power surges. Additionally, its reset capability allows for cycling through periods of high current without the need for replacement fuses. In medical devices, the PFRT.008.250.U can be used to protect internal electronics from over-current in the event of a power failure.

Working Principle

The PFRT.008.250.U is a Resettable Polymeric Fuse, which utilizes a polymer film as its basic operating principle. The polymer film is designed to provide thermal protection against over-currents. When the current passing through the film is too high, the film will heat up, causing the fuse to open and interrupt the flow of current. The fuse will remain open until the current is reduced to a safe level, at which time the fuse will reset and the current will flow again.

The PFRT.008.250.U Resettable Fuse is also designed to provide protection against over-voltage and over-temperature events. If the voltage or temperature exceeds the rated levels, the fuse will trip and open, interrupting the flow of current. After the situation is resolved, the over-voltage or over-temperature condition resolves, the fuse will reset and the current will flow again.

Conclusion

The PFRT.008.250.U Resettable Fuse is a widely used and versatile safety device. It is used in a variety of applications, including consumer electronics, telecommunications, automotive and industrial equipment. It utilizes a polymeric film as its basic operating principle, which allows it to provide protection against over-currents and over-voltage/temperature events. Its resettable capability makes it an ideal choice for a wide range of applications.

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