RXEF185-1

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PTC Resettable Fuses operate using a bimetallic element that contains two dissimilar metals with different thermal expansion properties. When a current flows through the element it heats up and its shape changes. This thermally-induced shape change causes an increase in the resistance of the element. If the current is small, the amount of heat produced will not be enough to cause the shape change and the resistance will remain low. When the current passing through the element exceeds the current rating of the fuse the element is heated to a higher temperature and a permanent shape change occurs that causes the resistance to increase. This increase in resistance causes the current through the element to drop and the element begins to cool down, and returns to its original shape thereby restoring the low resistance path for the current.

The RXEF185-1 is one of the PTC (Positive Temperature Coefficient Resettable Fuses) with many advantageous features, such as high surge current withstand capabilities and faster response times. The RXEF185-1 is robust and designed for high temperature applications. It can handle large current surges for short durations and is available in a range of mounting options for ease of installation.

The RXEF185-1 is used in a variety of applications. It is mainly used in automotive electronics, industrial equipment, medical devices, security systems, and telecommunications. In automotive applications, it is used to protect electronic circuitry from short circuits and/or overload currents. In industrial equipment, it is used to protect devices from power spikes or surges in voltage. In medical equipment, it is used to ensure that the device does not malfunction due to power surges or out-of-range current. In security systems, it is used to protect against power fluctuations. Lastly, in telecommunications, it is used to protect against power surges and assure stability in voltage.

The RXEF185-1 is designed to be robust and reliable with a fast trip time and high surge current withstand capabilities. It is available in various lengths, ranging from 5mm to 20mm, and has a maximum peak current rating of 6A. Other features include high dielectric strength, high cycle life, fast response time, and low power consumption. It also has an operation temperature range of -55C to 125C.

The working principle of RXEF185-1 involves the use of a bimetallic element composed of two dissimilar metals with different thermal expansion properties. When a current flows through the element, it heats up and causes a shape change, leading to an increase in the resistance of the element. This increase in resistance causes the current passing through the element to decrease, and the element begins to cool down, returning to its original shape and restoring the low resistance path for the current.

In conclusion, RXEF185-1 is a PTC Resettable Fuse with many advantageous features. It is used in a variety of applications, including automotive electronics, industrial equipment, medical devices, security systems, and telecommunications. The working principle of the RXEF185-1 involves the use of a bimetallic element composed of two dissimilar metals with different thermal expansion properties. When a current flows through the element, it heats up and causes a shape change, leading to an increase in the resistance of the element and dropping the current through the element.

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