RXEF160K-2 Circuit Protection

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PTC Resettable Fuses, RXEF160K-2 Application Field and Working Principle

PTC Resettable Fuses, including RXEF160K-2, are known as polymeric positive temperature coefficient fuses or PPTC and they can be applied in numerous electrical and electronic applications. The RXEF160K-2 is a resettable fuse that provides over-current protection with a fast response and high user-friendliness. The RXEF160K-2 is one of the leading PTC resettable fuses that are used in current-sensing applications.

The PTC resettable fuse design contains two parts. The first is a positive temperature coefficient element that is connected in series between the power source and the load. The second is an auxiliary circuit, also known as a “trip element” that are connected across the power line. When the current through the central element or overload exceeds a predetermined value, the trip element causes the central element to heat up and its temperature rises. This temperature rise is transferred to the plastic encapsulation of the fuse element, causing it to swell up (or expand) and break the electrical connection.

In order to reset the RXEF160K-2, the cause of the over-current must be removed and the housing must be cooled to ambient temperature before the fuse can be reset. When the temperature of the fuse element drops to a lower threshold (below its maximum temperature) the plastic housing of the element contracts and restores the electrical connection, thus re-enabling the power flow.

The RXEF160K-2 is mainly used in low voltage circuits and applications of up to 160V DC. It provides current protection of 2A-32A. The RXEF160K-2 is available in various shapes and sizes and its temperature characteristics are used to fine-tune the application. This fuse features a unique built-in temperature indicator that can be used to diagnose thermally related problems and ensure that the fuse is operating within its calibrated parameters.

RXEF160K-2 provides a very useful protection in a number of applications, such as:

• Power supply protection: The RXEF160K-2 can provide fast motion protection against inrush current and current surges.
• Power source protection: This fuse is great for protecting power sources from over-current and short circuit conditions.
• Circuit and Device Protection: This fuse can be used for protection against over-voltage and over-current conditions in electrical circuits.
• Batteries and Overload protection: RXEF160K-2 can provide protection against overloading and overcharging of battery packs.
• Data and communications protection: The fuse is also perfect for protection against power spikes and other events due to data transmission errors.

The RXEF160K-2 also offers increased reliability due to its high switching accuracy and repeatability. This element is UL recognized making it compliant with UL standards for electrical equipment. It also carries international safety certifications such as ENEC, CQC, and VDE that allow it to be used in applications in different parts of the world.

In conclusion, the RXEF160K-2 PTC Resettable Fuse provides fast response against overloads and is a reliable fuse for many applications, including data and communications protection. This little device offers great protection and it can also be used as a temperature indicator to diagnose thermal related problems.

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