C 860
thermistors for overcurrent protection
• by Epcos
• overcurrent and short-current protection
• leaded discs coated
• pitch 5.08mm
• ceramic PTC thermistors provide overcurrent protection for single-phase motors, transformers etc. as well as electronic circuits (subscriber line interface cards)
• the ceramic PTC resistor contrary to PTC's are polymer-based and after repeated cooling returns to its initial resistance value
• by responding to inadmissibly high currents and protecting pre-selected temperature limits which have been exceeded: the thermal dissipation from the complete power circuit is limited, as the increased resistance of the current is reduced to a harmless residual value
• the PTC resistor must not be exchanged after the maximum temperature has been exceeded, as after a short cooling period, the protective function immediately takes over