ELCB stands for Earth Leakage Circuit Breaker. It is a safety device used to protect electrical circuits from electric shock. ELCB is designed to detect small leakage currents that may occur due to insulation failure or faulty wiring. When an ELCB detects a leakage current, it quickly cuts off the power supply to prevent electric shock. ELCBs are commonly used in homes, offices, and industries to ensure electrical safety. There are two types of ELCBs: voltage-operated ELCB and current-operated ELCB. Voltage-operated ELCBs are more commonly used and operate based on the voltage difference between the live and neutral wires. Current-operated ELCBs are more sensitive and operate based on the difference in current flowing through the live and neutral wires. ELCBs are usually installed at the main distribution board or at specific points where electrical equipment is used. Example: If there is a fault in an electrical appliance and current starts leaking to the ground, the ELCB will detect the leakage and trip the circuit, cutting off the power supply. ELCBs are an essential component of electrical safety systems and help prevent electrical accidents and fires.