The Siemens Q115DF combines AFCI and GFCI protection in one breaker, giving a 15-amp branch circuit both arc-fault and ground-fault protection from a single device. Dual function protection is commonly required under NEC 2020 for areas such as kitchens and laundry spaces where both hazards must be addressed, and it is also a practical upgrade path for older homes moving toward current code without adding separate devices. This breaker includes self-test capability, 5 mA Class A ground-fault protection, and combination type AFCI coverage that helps detect both parallel and series arcing faults. It fits compatible Siemens and Murray load centers and is backed by a Lifetime Limited warranty.
What does a dual function AFCI/GFCI breaker do, and where is it usually required?
A dual function breaker combines arc-fault and ground-fault protection in one device, so it protects against both wiring arcing hazards and shock hazards on the same circuit. These breakers are often used where NEC 2020 rules call for both types of protection, including many kitchen and laundry branch circuits. They are also useful when updating older panels to current protection standards without installing separate AFCI and GFCI devices.
Can the Q115DF replace separate AFCI and GFCI protection devices?
Yes. The Q115DF is designed to provide both combination AFCI protection and 5 mA Class A GFCI protection from the breaker position, which can replace the need for separate arc-fault and ground-fault devices on that branch circuit when allowed by local code and the panel is compatible. This can simplify troubleshooting and free up space at the receptacle locations.
What is combination type AFCI protection, and how is it different from older branch-feeder AFCI?
Combination type AFCI protection is intended to detect a wider range of dangerous arcing events, including both parallel arcs and series arcs in branch-circuit wiring and connected cords. Older branch-feeder style AFCI devices focused more narrowly on certain arc patterns and offered less complete protection. Combination AFCI is the more current and more comprehensive arc-fault protection standard for residential circuits.
Will this 15-amp breaker fit my Siemens load center?
The Q115DF is intended for Siemens residential load centers in the ES, EQ, PL, E, P, W, HW, HPW, G, HG, SGF, SN, XG, and OG series, and it also fits Murray panels. The safest check is to confirm your panel labeling lists compatible Siemens Type Q family breakers before installation.
# Siemens 15 Amp Single Pole Dual Function AFCI/GFCI Circuit Breaker, Self-Test (Q115DF) **Model:** `Q115DF` **Brand:** Siemens **Category:** Circuit Breaker > The Siemens Q115DF combines AFCI and GFCI protection in one breaker, giving a 15-amp branch circuit both arc-fault and ground-fault protection from a single device. Dual function protection is commonly required under NEC 2020 for areas such as kitchens and laundry spaces where both hazards must be addressed, and it is also a practical upgrade path for older homes moving toward current code without adding separate devices. This breaker includes self-test capability, 5 mA Class A ground-fault protection, and combination type AFCI coverage that helps detect both parallel and series arcing faults. It fits compatible Siemens and Murray load centers 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, GFCI | | Afci Protection | Yes | | Gfci Protection | Yes | | 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, UL 943 | | Warranty | Lifetime Limited | ## What's Included - (1) Siemens Q115DF Dual Function AFCI/GFCI Circuit Breaker Source: https://www.jaspecs.com/siemens/circuit-breaker/q115df-siemens-dual-function-afci-gfci-breaker-15a/