Principle of self-restoring fuse

Self-restoring fuse is made of high-tech polymeric resin and nano-conductive grains processed by special technology. Under normal circumstances, nano-conductive crystals

The body forms a chain conductive path with the resin base link, and the fuse works normally. When the circuit occurs short circuit or overload, the large current flowing through the fuse makes its temperature increase. When the Curie temperature is reached, the density of the state decreases rapidly, the phase transition increases, the internal conductive link changes or breaks, the fuse moves to a high resistance state by step, the current is quickly cliped off, so as to quickly and accurately limit and protect the circuit. Its tiny current keeps the fuse in a protected state. When the power is off and the fault is removed, the temperature collection decreases, the state density increases, the phase transition recovers, the nanocrystals are reduced into a chain-like conductive path, and the self-restoring fuse returns to the normal state without manual replacement.

Iii. Parameters of self-restoring fuse

IH: Maximum working current (25℃)

IT: Minimum operating current (25℃)

Itrip: overload current

Tmax: maximum operation time of overload current

Vmax: indicates the maximum overload voltage

Imax: Maximum overload current

Rmin: Minimum resistance (25℃)

Rmax: Maximum resistance (25℃)