PRG21BB220MB1RK

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PTC Resettable Fuses are widely used in overcurrent protection for devices ranging from motors, DC power supplies, battery chargers and other electronic equipment. As their name suggests, PTC Resettable Fuses (PTC) are designed with the ability to reset themselves when the current is excessive. PRG21BB220MB1RK is a type of PTC resettable fuse, and it is designed to prevent damage to sensitive electronic equipment from short-circuits as well as current surges.

The application fields of PRG21BB220MB1RK mainly includes consumer, industrial and automotive applications. The consumer application of PRG21BB220MB1RK mainly involves home appliances, such as washers & dryers; industrial applications involve medical devices, control systems and lighting; automotive applications involve automotive electronics, engine control systems and drive systems.

The working principle of PRG21BB220MB1RK is quite simple yet effective, which is based on the property of Polymeric Positive Temperature Coefficient (PPTC). As the current flows through the fuse, PPTC material generates heat due to its resistance. If the current is too high, the fuse will reach a certain temperature and the PPTC will undergo a phase transformation, effectively tripping the fuse and interrupting the flow of current.

In addition, PRG21BB220MB1RK also features a low thermal quenching time, fast reset time, low power consumption and high operational safety. It is also more rugged and durable compared to traditional fuses, and the current rating is programmable, making it suitable for many applications.

Overall, PRG21BB220MB1RK is an ideal choice for overcurrent protection in consumer, industrial and automotive applications. It is simple to use, yet versatile and reliable. Furthermore, its low thermal quenching time, fast reset time, low power consumption and high operational safety makes it a great choice for protecting sensitive electronic equipment from short-circuits as well as current surges.

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