When using the self-recovery fuse, if the fuse function fails, do not rush to replace it. The correct way is to find out the cause of failure before replacing it. Next, I will introduce the reasons and solutions for the failure of the self-recovery fuse.
Cause 1 of "failure" of self-recovery fuse: the fuse was not connected properly when it was connected to the circuit, which caused the circuit to be different and the current could not pass.
Self-recovery fuse "failure solution": check whether both ends of the fuse are well connected with the access circuit port, and the access circuit should be connected in series.
Reason 2 of "failure" of self-recovery fuse: the self-recovery fuse has been used for too long, resulting in aging, and the fuse cannot be automatically restored to the original after the circuit is overloaded and blown.
Self-recovery fuse "failure solution": after the fuse is aged, it needs to be replaced with a new fuse. It is best to choose a new self-recovery fuse that is not long before production, so that the fuse can be used for a longer time without worrying about aging.
Cause 3 of "failure" of self-recovery fuse: The fuse is often in an environment with excessive temperature and current, which causes the fuse to start overload protection frequently, and finally leads to failure.
Self-recovery fuse "failure solution": replace the fuse that can adapt to the working temperature and current of the circuit, so that the fuse will not be overloaded frequently during normal operation of the circuit, and can be disconnected in time when the circuit is abnormally overloaded.
