Current protection circuit composed of relays

Overcurrent protection is a power supply load protection function to prevent damage to the power supply and load caused by overload output current, including short circuit on the output terminal. When the current is greater than the limit value, the normally closed contact of the relay is disconnected for protection. The normally open and normally closed contact of the relay is controlled by the MSP430 microcontroller to realize the function of automatically restoring the circuit operation. As shown in Figure 5: