AHS080-2018-2 Circuit Protection

PTC Resettable Fuses

PTC resettable fuses are a type of electrical protection device designed to protect an electrical circuit from overcurrent. They are also known as polymeric positive temperature coefficient (PPTC) fuses. Unlike traditional fuses, which are one-time-use devices that must be replaced once activated, PTC resettable fuses provide a reset after they have been activated, allowing them to be reused. They are commonly found in automotive, consumer electronics, medical devices, and other applications where overcurrent protection is needed.

AHS080-2018-2 Application Field and Working Principle

The AHS080-2018-2 PTC resettable fuse is a one-shot resettable fuse designed to protect electrical circuits from overcurrent in low-voltage applications. It is designed to trip and then reset upon the removal of excess current. The device is ideal for automotive, medical, electronics, telecom, and other applications that require protection from overcurrent.

The AHS080-2018-2 PTC fuse is comprised of a molded case filled with a special blend of thermally conductive polymeric material. The polymeric material is thermally sensitive to the current level in the circuit. When the current reaches a certain threshold, the polymeric material triggers a trip, causing an irreversible current limitation and triggering an internal fault indicator. The trip current of the AHS080-2018-2 fuse is adjustable using an internal set screw, enabling users to protect a variety of different applications.

Once the fault has been safely cleared, the device can be reset using the reset switch on the device. This resets the device to its original condition, allowing it to re-trip in the event of another overcurrent occurrence. The reset process is quick and easy and does not require any tools.

The AHS080-2018-2 PTC resettable fuse is designed for applications with a maximum current level of 5A. It offers high reliability and excellent performance, even in harsh environments. The device is UL listed and meets the requirements of the UL707 and UL1699 standards. It is available in a variety of sizes and terminations, enabling it to be used in a wide variety of applications.

Conclusion

PTC resettable fuses provide an economical, reliable, and easy-to-use solution for protecting electrical circuits from overcurrent. The AHS080-2018-2 PTC resettable fuse is a versatile device designed for low-voltage applications with a maximum current level of 5A. It offers high reliability and excellent performance, even in harsh environments. It is available in a variety of sizes and terminations, enabling it to be used in a wide variety of applications.