Siemens Q1515AFCP Q1515AFC - 15/15A Combination AFCI | Tandem Miniature Circuit Breaker

This breaker is designed for use in Siemens load centers that accept UL Type QTA breakers. The panel must be rated for tandem breakers (CTL) in the specific slot where it will be installed.

No. Because this is a tandem breaker, both 15A circuits draw from the same phase (a single bus stab). Using a shared neutral for both circuits would overload the neutral wire. Multi-wire branch circuits require a 2-pole breaker that spans two separate phases.

The Q1515AFC features a pigtail neutral connection. The coiled white wire must be connected directly to the panel's neutral bus bar to power the breaker's internal AFCI circuitry.

There is no difference in the breaker itself. The "P" at the end of Q1515AFCP simply indicates retail clamshell packaging, while Q1515AFC is typically sold in standard packaging.

As a Combination Type AFCI (CAFCI), it is designed to detect both parallel arc faults (line-to-ground or line-to-neutral) and series arc faults (arcing across a break in a single wire).

It requires only one standard 1-inch space. As a tandem breaker, it provides two independent 15-amp circuits within a single-pole footprint, helping to save space in crowded panels.