Overcurrent protection

In electric and electronic circuits, when abnormal currents exceeding the rated value are detected at sensing points in the circuit due to causes such as short circuits or leakage, the output is stopped by interrupting the circuit to protect the secondary circuit. This mechanism is synonymous with OCP. There are types that automatically resume after the cause of the overcurrent is removed, and others that require manual reset after confirming safety. Overcurrent protection functions are widely used, from power transmission and distribution circuits handling high power to electronic circuits handling low power. In power transmission and distribution circuits, overcurrent protection also plays an important role in preventing electrical accidents such as electric shocks and leakage.