A temperature protection device is provided, which comprises with a polymeric positive temperature coefficient (PTC) device 1 having a conductive polymer 5 placed between two electrodes 6 and 7, and a metal member 2 bonded to one of the electrodes 7 of the polymeric PTC device, and which, when the ambient temperature exceeds a prescribed temperature, terminates the current-flowing state between the other electrode 6 of the polymeric PTC device 1 and the metal member 2. The conductive polymer 5 expands thermally when the ambient temperature exceeds the prescribed temperature, and a material is selected for the metal member 2 that will melt as a result of the heat generated by the conductive polymer during the thermal expansion.