RXEF090-2

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

PTC Resettable Fuses are a form of circuit protection devices with the ability to sense a circuit overload and open a circuit in order to protect the component being powered from damage. The main purpose of these fuses is to protect the circuit by limiting the amount of current passing through it. While the resettable fuse can prevent the circuit from being damaged by an overload, it cannot totally eliminate the problem. This is why it is important to use the proper rated fuse in any application and to be aware of the type and rating of the fuse being used.

One of the most common PTC Resettable Fuses is the RXEF090-2. This particular fuse is a radial-leaded ceramic-body device that is designed for use in applications that require current limit protection, as well as the ability to reset the fuse after the overload has dissipated. RXEF090-2 fuses are UL and CSA approved and offer a wide current range of 0242A. The operating voltage of this fuse has a range of up to 250V AC/DC.

In order to understand the application and working principle of the RXEF090-2 PTC Resettable Fuse, it is helpful to consider how these fuses work. The RXEF090-2 fuse uses a ceramic body and positive temperature coefficient (PTC) technology. This technology works by having a current-carrying deflector exposed to a small temperature rise. As the current rises, the temperature along its length rises causing an increase in resistance which eventually limits the current through the circuit. This thermal mechanism is the primary mechanism for protection in PTC fuses.

The application of the RXEF090-2 PTC Resettable Fuse is primarily in circuit protection applications. The primary purpose is to protect a circuit against short-circuit currents, which can cause damage to components or even lead to fires. Furthermore, these fuses can be used to provide protection against inrush currents which can occur when a power supply is first connected to a circuit. Due to their ability to reset, these fuses can be used in applications that cannot tolerate a permanent open circuit after a circuit trip.

The working principle of the RXEF090-2 PTC Resettable Fuse is based on the negative temperature coefficient (NTC) function of the ceramic body. When current rises through the conductor, the body temperature increases. As the temperature increases, resistance also increases in order to limit the amount of current passing through the circuit. As the temperature continues to rise, the fuse will trip and open the circuit. Once the overload dissipates, the temperature of the ceramic body decreases allowing the fuse to return to its normal operating state and reset automatically.

The RXEF090-2 Resettable Fuse is an amazing device that can be used in various applications to provide circuit protection. It is important to understand its basic operation in order to be able to select the correct fuse for the application. With the proper rating and its UL and CSA approval, the RXEF090-2 can be trusted to effectively protect a circuit from overloads and inrush currents.

The specific data is subject to PDF, and the above content is for reference