RXEF030-2 Circuit Protection

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PTC Resettable Fuses are broadly used in various electrical applications as a means of protecting electronic devices from overvoltage, overcurrent, and over temperature. This type of fuse allows for various configurations, making them suitable for a variety of applications. The RXEF030-2 is a PTC Resettable Fuse used in the industrial, automotive, and consumer electronics markets.

The RXEF030-2 is a self-resetting fuse that contains two main components: a ceramic body and a PTC core. The ceramic body is composed of a ceramic tube with a central hole to hold the PTC core. This hole is often referred to as the “ventilation zone”. Its purpose is to allow gas to escape from the body as needed. The PTC core is made of a zinc oxide blend and several other materials to create a resistive element. This element is designed to act as a switch, opening and closing depending on the current flowing through it.

When the device is initially energized, the ceramic body remains at ambient temperature and the PTC core is in the "open" state. This allows the current to flow through the fuse unimpeded. As the current begins to exceed the trip level, the PTC core begins to heat up. This causes the resistance to increase, which in turn reduces the current flowing through the core. Once it reaches a certain threshold, the PTC core will open completely, turning off the device.

When the current is below the trip level, the PTC core will cool off and reset itself, allowing the current to flow once again. This is referred to as the “on-off” cycle of the device. The RXEF030-2 is designed to provide long-term protection from overvoltage, overcurrent, and over temperature. It features an enhanced heat-dissipating structure and a temperature cut-off point of 105°C. This allows it to handle higher currents before tripping.

The device is designed to be mounted on printed circuit boards and connected to a power source. It can also be integrated into existing systems where additional protection is needed. The RXEF030-2 is compatible with a wide range of applications, including industrial systems, appliances, automotive electronics, and consumer electronics.

Overall, the RXEF030-2 is an excellent choice for providing protection in a variety of applications. Its self-resetting abilities and enhanced heat-dissipating structure make it ideal for both industrial and consumer applications. It is reliable and easy to install, making it an excellent choice for those looking for a PTC Resettable Fuse.

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