CYAFDD-63 Arc Fault Circuit Interrupters, abbreviated as AFCI, is a new circuit protection product. Its main function is to detect and identify dangerous ground arc faults, parallel arc faults, and series arc faults, and promptly activate the device that interrupts the current to prevent electrical fires. When an arc fault occurs, due to the low current intensity, which is below the set value of overcurrent protection widely installed in power systems, especially in low-voltage distribution areas, installing an AFCI arc fault circuit breaker at the end of the distribution line can promptly detect the arc and cut off the circuit, effectively reducing the losses caused by the arc.

AFDD is an intelligent circuit protector with an integrated design of MCB and RCCB, capable of detecting and identifying fault arcs and normal operating arcs in the circuit. It prevents fire hazards caused by fault arcs such as poor contact and insulation in electrical circuits. It integrates fault arc protection, overload protection, short circuit protection, overvoltage protection, surge suppression, and residual current protection.