PFRA.017

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PTC resettable fuses are designed to protect electronic equipment from overcurrent and overtemperature damage. They are thermally self-resetting devices that provide short-circuit protection for a wide variety of applications. The PFRA.017 is one such device and is designed for use in industrial, commercial and automotive applications. In this article, we will look at the application field and working principle of the PFRA.017.

Application Field

The PFRA.017 is a type of temperature-dependent resettable fuse and can be used in a variety of different electrical and electronic applications. It is a fully automatic device that provides protection from overtemperature and overcurrent conditions in semiconductor power devices. It can be used in a variety of applications including motor control, solar energy inverter, IT and telecom equipment, industrial power systems, automotive, medical equipment, consumer electronics, and other home appliances. Because of its current rating of up to 50 amps, it is also suitable for use in high-current applications.

Working Principle

The PFRA.017 utilizes a thermally self-resetting mechanism to protect electronic equipment from overcurrent and overtemperature damage. The device is composed of a ceramic body with a fuse element. The fuse element is triggered when an overcurrent or overtemperature condition occurs, thus breaking the resistor and creating a short-circuit. This short-circuit path causes the upper and lower contacts to become interconnected, tripping the device and providing short-circuit protection.

The PFRA.017 has an adjustable trigger temperature that can be set in the range of 45 - 125 °C. The device will reset automatically once the overtemperature condition is eliminated. It also has an adjustable hold time that can be set from 5 seconds to 10 minutes. The device will remain in the open state for the duration of the hold time and then reset automatically when the current level drops below the trigger level.

The PFRA.017 also features low power consumption, reverse current protection, LED indicator, low power storage, low thermal time, and high dielectric strength. It is also RoHS compliant and has a minimum shelf life of 10 years.

Conclusion

The PFRA.017 is a type of temperature-dependent resettable fuse designed for use in a variety of different electrical and electronic applications. It is a fully automatic device that provides protection from overtemperature and overcurrent conditions in semiconductor power devices. It features adjustable trigger temperature and hold time settings, low power consumption, reverse current protection, LED indicator, low power storage, low thermal time, and high dielectric strength. The device is also RoHS compliant and has a minimum shelf life of 10 years.

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