Types of RCCBs: RCCBs are classified into types AC, A, B, and F, each suited for different kinds of leakage currents and applications. Advantages: RCCBs provide essential protection against electric shocks and fires, are easy to install, and support various types of currents and. The primary function of an RCD is to monitor the electrical current flowing in a circuit and quickly disconnect the power supply if it detects an imbalance current (leakage of current to ground) between the live and neutral conductors. An RCD is essentially a current-operated ELCB and is commonly. A residual-current device (RCD), residual-current circuit breaker (RCCB) or ground fault circuit interrupter (GFCI) is an electrical safety device, more specifically a form of Earth-leakage circuit breaker, that interrupts an electrical circuit when the current passing through line and neutral. RCCB Definition: A Residual Current Circuit Breaker (RCCB) is defined as a safety device that detects and interrupts a circuit when there is a leakage current to the ground. Working Principle: RCCBs operate based on Kirchhoff's current law, detecting imbalances in the live and neutral wires and. You can find several main types of residual current circuit breaker type options. The residual current circuit breaker type A detects both AC and pulsing DC faults. By continuously monitoring the current flow, RCCBs can identify discrepancies caused by.