RXE020-2

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PTC Resettable Fuses are electrical components that are designed to protect circuits from secondary damage caused by overcurrents. The RXE020-2 is a type of PTC Resettable Fuse that is commonly used in both consumer and industrial applications. Today, we\'ll take a closer look at both the application field and working principle of the RXE020-2 PTC Resettable Fuses.

Applications

The RXE020-2 PTC Resettable Fuses are typically used for overcurrent protection in various electrical circuits. These fuses are particularly useful because they are self-resetting after the primary overcurrent has been handled. This allows them to conserve energy in the process because the device won\'t have to be powered continuously while it waits for the necessary resetting process. The RXE020-2 is small and lightweight, making them the ideal choice for applications that need a dependable overcrowd protection but need to limiting the space requirements.

These PTC Resettable Fuses have become the go-to choice for a wide variety of applications, including consumer electronics, such as computers and cellular phones, and industrial applications, such as control and monitoring systems and relay circuits. It is also commonly used as a supplemental device for circuit breakers and other power protection equipment.

Working Principle

The RXE020-2 PTC Resettable Fuses feature a polymeric Positive Temperature Coefficient (PTC) element which uses the internal heat of the element to achieve the desired overcurrent protection. It features an isolated contact structure, which ensures that the fuse will not be affected by external equipment and environmental factors. The RXE020-2 also features a bi-metallic contact structure that is designed to energize itself when the fuse reaches its reset point.

When the device is exposed to an overcurrent, the PTC element in the fuse heats up, causing the resistance in the element to increase significantly. As the fuse continues to heat up, the current begins to decrease until the point of departure is reached and the fuse will begin to reset itself. Once the fuse has reset itself, it is ready to be used again. The RXE020-2 is designed to withstand up to 1000 re-energizing cycles.

In conclusion, the RXE020-2 is a type of PTC Resettable Fuse that is designed to protect against secondary damage caused by overcurrents. Its small size and self-resetting capabilities make it an ideal choice for applications that need dependable overcurrent protection but need to limit the space requirements. By understanding both its application field and working principle, engineers and technicians can more effectively harness the power of the RXE020-2 PTC Resettable Fuses.

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