Überstromschutzschaltung für eine elektrostatische selbstabschaltende Einrichtung

This specification discloses an overcurrent protective circuit for detecting an overcurrent flowing through an electrostatic self-turn-off device (1) and suppressing the overcurrent. The overcurrent protective circuit according to the present invention comprises a power source (E1) for supplying a driving voltage to said electrostatic self-turn-off device (1) to turn on the device (1), a switching circuit (Q2) for performing on-off control of the driving voltage to give a driving signal to the self-turn-off device (1), and a circuit for detecting the voltage of the driving control terminal (G) and holding the potential of the driving control terminal (G) below the driving voltage in response to the reaching of the detected voltage to a predetermined value.