Overcurrent protection circuit for space application

The utility model relates to an over-current protection circuit for space application, which comprises a current sampling circuit, a comparison locking circuit and an execution circuit, the current sampling circuit collects the current of a power supply line of a space power supply system, and the output end of the current sampling circuit is connected to the comparison locking circuit. The comparison locking circuit compares the output of the current sampling circuit with a reference voltage VRef, the output of the comparison locking circuit is connected to the execution circuit, and the execution circuit controls the on-off of a power supply line of the space power supply system. The current sampling circuit is used for collecting the current of the power supply line of the space power supply system, the amplified signal is compared with the reference voltage VRef, the on-off of the power supply line is controlled according to the comparison result, and the circuit can be effectively protected and can be re