I ja sam pomislio na te sa kotvom koja se razletuje kada dostigne neku temperaturu ali nema ih manjih od nekoliko W.
Mozda je u pitanju polyfuse?
Citat:
A polymeric positive temperature coefficient device (PPTC, commonly known as a resettable fuse, polyfuse or polyswitch) is a passive electronic component used to protect against overcurrent faults in electronic circuits. They are actually non-linear thermistors, however, and cycle back to a conductive state after the current is removed, acting more like circuit breakers, allowing the circuit to function again without opening the chassis or replacing anything.