RXEF030 Circuit Protection

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, also known as Polyfuses, are widely used to protect electrical circuits against overload and short circuit conditions. The RXEF030 is a self-resettable, non-linear Polymeric Positive Temperature Coefficient of Resistance (PPTC) device. It is used to protect against chronic overcurrent of 5A and acute overcurrents of up to 25A. The RXEF030 is especially helpful in automotive applications, as it can reset itself multiple times while providing reliable protection against overload and short circuit current levels.

The RXEF030 Polyfuse is a two-terminal device with a built-in temperature sensing element. This element is made of a non-linear, polymeric material that, when heated, changes its resistance significantly. When the thermal element senses an overload or short-circuit current condition, the resistance of the thermal element starts to increase. This change acts as a switch, tripping the PTC device and stopping the current.

The RXEF030 is designed to detect overcurrents up to 25A and reset at a predetermined current threshold of 5A. It has a fast-acting response, which is ideal for preventing circuit damage from short-circuiting and overvoltage conditions. This makes the RXEF030 an ideal choice for protecting automotive electrical systems—such as airbag systems, engines, and fuel pumps—from overloads and short circuits.

Additionally, the RXEF030 has a low hold current of 2.5A—much lower than many other Polyfuse types. This means that, while still protecting the circuit against overloads and short circuits, the RXEF030 can still operate at high currents without resetting due to the low-hold current feature. This makes the RXEF030 an ideal choice for automotive applications where the current needs to be consistently high.

In summary, the RXEF030 is a self-resettable non-linear Polymeric Positive Temperature Coefficient of Resistance (PPTC) device. It is designed to protect automotive electrical systems from overload and short-circuiting by tripping at 25A and resetting at 5A. It has a fast-acting response and is ideal for high current applications due to its low hold current of 2.5A. Therefore, the RXEF030 is an ideal choice for protecting automotive circuits and can be used in a variety of automotive applications to provide reliable protection.

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