PURPOSE: To provide a device, with which the number of times to use a temperature fuse can be minimized and the supply of power to all the heater lines can be immediately stopped just after the fusion of the temperature fuse is generated, concerning the abnormal temperature control of electronic equipment using the temperature fuse.

CONSTITUTION: Concerning the abnormal temperature controller for electronic equipment, a temperature fuse 3 is inserted in any line different from a heater line 2 and arranged at a certain position so as to detect the heating temperature due to a heater 1 and when the temperature fuse 3 is fused at any abnormal temperature, a relay circuit 4 is turned on and turned off by operating a braker 5 and all the heater lines 2 are turned off so that the supply of a power source 9 to the heater 1 can be stopped.