Resettable fuses (results: 256)

Polymer Fuses

Polymer fuses represent a specialized group of fuses that are distinguished primarily by their ability to be reset. A polymer fuse protects a circuit from the negative effects of overcurrent, but unlike traditional fuses, it does not get destroyed when it operates. Thus, the component does not need to be replaced each time the circuit experiences excessive current flow.

How Do Polymer Fuses Work?

The unique characteristics of polymer fuses are achieved through their construction. These components are made from a polymer material that normally has relatively low resistance. However, when an overcurrent condition occurs, the temperature of the fuse rises, causing the carbon connections to break. Once the current stops flowing, the component cools down, allowing it to return to its original operational mode.

How Many Operating Cycles Can Polymer Fuses Endure?

Polymer fuses are components that can protect a circuit from overcurrent multiple times. However, they have a defined number of operating cycles after which they will lose their effectiveness. This number can vary depending on the design and materials used, but it usually ranges from several dozen to over a hundred cycles. Before purchasing, it is wise to check the values specified by the manufacturer. This parameter should also be matched to the specific requirements of the device.

Polymer Fuse – Markings

The components available in our online store differ in their properties. To make it easier to identify the parameters of specific components, manufacturers use appropriate markings on polymer fuses. These typically include properties such as nominal current and rated voltage. The markings help in easily finding the right component for your needs.

Applications of Polymer Fuses

Polymer fuses are versatile components used in many different devices. They are useful in situations where using single-use elements would be impractical. Polymer fuses are therefore used in portable electronic devices, in projects created by enthusiasts, and also in applications like automobiles.

Although polymer fuses are highly practical, in some circuits, it may be necessary to use other types of components. That’s why our store also offers components such as cup fuses, ceramic fuses, and thermal fuses. This ensures you can easily find the right protection for your circuit.