Self-recovery fuse is made of special materials and has automatic recovery function. When the circuit fails, the current increases, which will change the structure and block the current, thus achieving the effect of protecting the circuit. Therefore, some people think that if the self-recovery fuse is installed in the circuit, the problem of circuit failure can be solved automatically.
Although the self-recovery fuse can protect the circuit from being damaged by excessive current, it cannot completely solve the problem of circuit failure. After the circuit fails, the fuse blocks the current, and after a period of time, it automatically restores the structure and reconnects the circuit. If the problem of current increase caused by circuit failure is not solved, the self-recovery fuse will operate repeatedly until the fuse is damaged.
So can the self-recovery fuse solve the circuit fault? In fact, the self-recovery fuse is only suitable for some unstable working environments. If you want to keep the circuit open when the circuit fails, it is more appropriate to use a disposable fuse. Moreover, if the circuit fails, if the one-time fuse is to be replaced, the cause of the circuit failure must be found first. After solving the problem, the fuse circuit can be used normally. Generally speaking, each fuse has its own advantages and disadvantages. According to the actual working condition of the circuit, it is a safe method to select the appropriate fuse.
