Siemens QA115AFCNP is a 15-amp, 120-volt, single-pole arc-fault circuit interrupter (AFCI) breaker with a plug-on neutral connection, part of the Siemens QA family. As a combination AFCI, it detects both series and parallel arc faults and interrupts power to protect 15 A branch circuits in residential panels, with a 10 kA interrupt rating at 120 V. The NP designation indicates plug-on neutral compatibility for Siemens load centers such as EQL, SEQ, and EQG, and the unit fits standard 1-inch-wide spaces in compatible panels.
