自恢复保险丝，是一种过流电子保护元件，采用高分子有机聚合物在高压、高温，硫化反应的条件下，掺加导电粒子材料后，经过特殊的工艺加工而成。传统保险丝过流保护，仅能保护一次，烧断了需更换，而自恢复保险丝具有过流过热保护，自动恢复双重功能。
为了保证PT C自恢复保险丝的品质，在开发与制造中必须对其进行全面、严格的测试。
After PTC fuses are manufactured, a lot of high-demanding tests must be carried out to ensure their quality.
自恢复保险丝又称为高分子聚合物正温度热敏电阻ptc，是由聚合物与导电粒子等构成。
Resettable fuse, also known as polymer positive temperature thermistor PTC, is a polymer with conductive particles such as composition.
高分子自恢复保险丝是一种新型正温度系数的过流保护元件，其使用及选用都有一定的规则。
The macromolecules self-healing fuse-wire is a new excess current protection component of plus temperature coefficient. Its application and choice should comply with a certain rule.
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