RTEF120-2

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PTC Resettable Fuses, widely known as Polymeric Positive Temperature Coefficient fuses, are increasingly becoming the preferred choice for over-current protection thanks to their unique ability to reset and resume after an overload condition. The RTEF120-2 is one such type of PTC Resettable Fuses, which offers superior performance and ease-of-use in AC/DC industrial and automotive applications.   

The RTEF120-2 is a fast-acting, self-resetting, polymeric positive temperature coefficient (PPTC) device. It works by breaking the electrical circuit when a current surge or overload occurs. The RTEF120-2 is designed to automatically reset itself after the over-current condition has been removed allowing it to resume normal working conditions. It is rated for up to 120mA with a maximum voltage of 32V and can handle up to 2A of current.

The RTEF120-2 has a wide variety of applications including electronics, appliances, power supplies, lights, motor circuits, current-limiting, over-current protection, and circuit breaker applications. The RTEF120-2 is suitable for both AC and DC applications and can be used to protect sensitive electronics from accidental damage caused by current surges or overloads. Additionally, these devices provide a low holding current, thanks to their low resistance, ensuring a low energy footprint.

The working principle of the RTEF120-2 is based on the properties of polymeric positive temperature coefficient (PPTC) materials. These materials have the unique ability to reduce their resistance with an increase in temperature. The RTEF120-2 uses this property to detect when a current surge or overload occurs. When this happens, the fuse will blow its circuit as a result of the increased current causing the temperature of the material to rise. When the temperature of the PPTC material reaches a certain threshold, it will experience an abrupt increase in resistance resulting in the breaking of the circuit.   

The RTEF120-2 also includes a thermal fuse which is designed to protect the device from unsuitable operating temperatures. The fuse will prevent the device from overheating and potentially causing further damage to the circuitry. The RTEF120-2 also features a built-in test button which can be used to test the unit before installation. 

Overall, the RTEF120-2 is a great choice for over-current protection applications. Its ability to automatically reset itself makes it ideal for providing reliable and consistent protection. Thanks to its compact size and low resistance, it can be used in a variety of applications without taking up a lot of space or increasing the energy consumption. And with its built-in thermal fuse and the test button, it ensures that the device will function properly and safely.

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