Siemens US2:QA115AF 15-Amp, Single Pole, 120-volt, Plug On Type, Branch Feeder Style AFCI Breaker
A Branch Feeder Type Arc Fault Circuit Interrupter (AFCI) is a device intended to mitigate high current arcing faults in the complete circuit. High current arcing faults occur from line-to-neutral or line-to-ground. These arcing faults are in parallel with the load.