RXEF300

PTC Resettable Fuses

PTC (positive temperature coefficient) resettable fuses have been around for many years and have only recently found their way into large markets. PTC Resettable Fuses are small, inexpensive electronic devices that are designed to protect electrical circuits from overcurrent conditions. When an overcurrent condition occurs, the resistance of the resettable fuse increases and its current carrying capacity decreases. This effectively limits the power that can be supplied to the protected circuit, thereby preventing damage from occurring. The PTC Resettable Fuses are also designed to self-reset after the overcurrent has subsided, allowing the circuit to be restored to its original working state.

RXEF300 Application Field and Working Principle

The RXEF300 series of PTC Resettable Fuses are specifically designed for high current applications. It is available in a wide variety of sizes and amp ratings, ranging from 10 – 100 Amps. It is ideal for applications such as automotive, computer, consumer electronics, medical equipment, and engineering applications. The RXEF300 series fuses are designed to be highly reliable, with low leakage current, low thermal impedance, good temperature stability, and long life. The RXEF300 series fuses also feature an innovative design that allows for maximum flexibility in current-limiting set points.

The working principle of the RXEF300 PTC Resettable Fuses is simple. When the current exceeds its rating, the internal resistance will increase, limiting the current that flows through it. Once the current is reduced, the resistance will decrease and the fuse will reset itself, allowing the circuit to continue to operate normally.

The RXEF300 series of PTC Resettable Fuses offers a wide variety of features and benefits that make it well-suited for a variety of high-current applications. It is designed to be highly reliable and offers a long working life, low leakage current, low thermal impedance, and good temperature stability. Its innovative design also allows for maximum flexibility in current-limiting set points. The wide variety of sizes and amp ratings make it suitable for any high-current application.