What is A Self Recovery Fuse
1、 What is a self recovery fuse
Self recovery fuse is an overcurrent electronic protection component that uses a polymer organic polymer under high pressure, high temperature, and sulfurization reaction conditions.
After mixing with conductive particle materials, it is processed through a special process. Habitually applying PPTC (Polymer Positive Temperature).
Coefficent, also known as a self restoring fuse. Strictly speaking, PPTC is not a self restoring fuse, and Resettable Fuse is a self restoring fuse.
2、 Principle of self recovery fuse
The self recovery fuse is made of high-tech polymer resin and nano conductive grains through special processing. Under normal circumstances, nano conductive grains.
The body forms a chain like conductive path along with the resin based link, and the fuse operates normally; When a circuit experiences a short circuit or overload, the large current flowing through the fuse causes its temperature to increase. When the Curie temperature is reached, the density of states rapidly decreases, the phase transition increases, and the internal conductive link changes or breaks in an avalanche state. The fuse transitions to a high resistance state in a stepwise manner, and the current is quickly and accurately clamped to limit and protect the circuit. The small current keeps the fuse in a protected state, After power outage and troubleshooting, the temperature of the fuse decreases, the density of states increases, and the phase transition recovers. The nanocrystals are reduced to a chain like conductive path, and the self restoring fuse returns to its normal state without the need for manual replacement.
Fig.1
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本文由三年不鸣转载自XC News，原文标题为:normally open vs normally closed.What is a self recovery fuse，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。
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