Input overvoltage protection circuit

An input overvoltage protection circuit comprising:

• a first wiring and a second wiring which are connected to a protected circuit in order to supply a voltage thereto;
• a fuse inserted in series in the first wiring and configured to interrupt a current flowing through the first wiring when a current greater than or equal to a predetermined value flows therethrough;
• a first surge absorber, one end of which is connected between the protected circuit and the fuse in the first wiring, and another end of which is connected to the second wiring, and which is configured to suppress an applied voltage to a first voltage and output the first voltage in a case that the applied voltage is higher than the first voltage;
• and
• a second surge absorber connected in parallel with the first surge absorber, and connected to the first wiring and to the second wiring at a location between the first surge absorber and the protected circuit, and which is configured to become conductive when a voltage greater than a second voltage is applied thereto.