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　　self recovery fuse will still activate protection again after being powered on again.

　　Here are a few knowledge points about self-healing fuses that need to be sorted out:

　　1. Self recovering fuses are different from traditional one-time blown fuses, as they can protect circuits multiple times without the need for disassembly and replacement.

　　2. After the self recovery fuse is activated for protection, the circuit is not completely interrupted, and there is still a small current in the circuit. The current is very weak, which can keep the self recovery fuse in a protected state. At this time, other devices on the circuit cannot work.

　　3. The main changes before and after the self recovery fuse starts protection are that the temperature before protection is at room temperature, and after protection, the temperature rises, and the internal temperature reaches 130 ℃.

　　4. After the self recovery fuse is activated for protection, the equipment stops working and needs to be manually powered off first. After troubleshooting, the circuit can be restored to normal operation.

　　5. The process of restoring a self recovering fuse is the process of lowering its own temperature. After a power outage, there is no current passing through and it no longer generates heat. The heat dissipation restores the temperature and state before starting.

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