NEC 2020 requires AFCI protection in bedrooms, living rooms, dining rooms, kitchens, hallways, closets, sunrooms, and other common dwelling spaces, making the Siemens QA115AFC a standard upgrade for new circuits and panel replacements. This combination type AFCI detects both branch-circuit and feeder arc faults, providing broader protection than older devices that handled only limited arc-fault conditions. The second-generation self-test function continuously verifies AFCI operation to satisfy UL 1699B requirements without relying on manual testing alone. It uses a thermal-magnetic plus AFCI trip system, carries a 10 kAIC interrupt rating, fits Siemens and Murray-compatible panels, and is backed by a Lifetime Limited warranty.
What rooms require AFCI protection under NEC 2020?
NEC 2020 requires AFCI protection for most 120-volt branch circuits supplying outlets or devices in bedrooms, living rooms, family rooms, dining rooms, kitchens, hallways, closets, sunrooms, libraries, dens, and similar habitable spaces. In practice, that covers most interior living areas in a home. Local code enforcement can vary, so verify with your inspector if you are working on a remodel or service upgrade.
How is a combination AFCI different from a regular thermal-magnetic breaker?
A standard breaker responds to overloads and short circuits but does not detect dangerous arcing conditions caused by damaged conductors, loose terminations, or failing cords. A combination AFCI adds arc-fault detection for both branch and feeder faults while still retaining thermal-magnetic overcurrent protection. That broader protection is why AFCI breakers are required in more residential spaces under modern code.
What does the self-test function do on Siemens QA series breakers?
The QA series performs an internal self-check to confirm the AFCI electronics remain operational during service. This automatic verification supports UL 1699B self-test requirements and reduces the risk of a failed protective function going unnoticed. The breaker should still be installed and tested according to Siemens instructions after energizing the circuit.
Will this breaker fit my Siemens load center?
The QA115AFC is designed for the same panel families as Siemens Type QP breakers, including Siemens ES, EQ, PL, E, P, W, HW, HPW, G, HG, SGF, SN, XG, and OG series, plus many Murray panels. The safest confirmation is the panel labeling inside the load center door, which lists approved breaker types. Do not substitute it into panels from other manufacturers unless the panel labeling specifically permits it.
# Siemens 15 Amp Single Pole AFCI Combination Circuit Breaker, Self-Test (QA115AFC) **Model:** `QA115AFC` **Brand:** Siemens **Category:** Circuit Breaker > NEC 2020 requires AFCI protection in bedrooms, living rooms, dining rooms, kitchens, hallways, closets, sunrooms, and other common dwelling spaces, making the Siemens QA115AFC a standard upgrade for new circuits and panel replacements. This combination type AFCI detects both branch-circuit and feeder arc faults, providing broader protection than older devices that handled only limited arc-fault conditions. The second-generation self-test function continuously verifies AFCI operation to satisfy UL 1699B requirements without relying on manual testing alone. It uses a thermal-magnetic plus AFCI trip system, carries a 10 kAIC interrupt rating, fits Siemens and Murray-compatible panels, and is backed by a Lifetime Limited warranty. ## Specifications | Attribute | Value | |---|---| | Product Type | Circuit Breaker | | Poles | 1 | | Amperage | 15 | | Voltage Vac | 120 | | Interrupt Rating Ka | 10 | | Trip Type | Thermal-Magnetic, AFCI | | Afci Protection | Yes | | Gfci Protection | No | | Self Test | Yes | | Plug On Neutral | No | | Wire Gauge Awg | 14-10 | | Compatible Panels | Siemens ES, EQ, PL, E, P, W, HW, HPW, G, HG, SGF, SN, XG, OG series; Murray panels | | Certifications | UL 489, UL 1699 | | Warranty | Lifetime Limited | ## What's Included - (1) Siemens QA115AFC AFCI Circuit Breaker Source: https://www.jaspecs.com/siemens/circuit-breaker/qa115afc-siemens-afci-circuit-breaker-15a/