What is reasedual current?

Reasedual current, often referred to as residual current, is the unbalanced electrical current that flows in a circuit when there's a fault or leakage, typically due to insulation failure or damage. It is a critical parameter in electrical safety, as high residual currents can lead to electric shock hazards or equipment damage. Residual Current Devices (RCDs) are utilized to detect and disconnect circuits when residual currents exceed safe levels, thereby protecting users and preventing potential accidents.