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Siemens Q115DFN Dual Function Miniature Circuit Breaker
- 15A
- 1 Pole
- Plug-On
Siemens
Q115DFN
Dual Function Miniature Circuit Breaker
Brand
Siemens
SKU
Q115DFN
Quantity
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Siemens Q115DFN - 15A Dual Function Miniature Circuit Breaker
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Description
Streamlining residential installations, this 15-amp dual function model features a plug-on neutral connection that completely eliminates pigtail wiring. It provides mandatory combination AFCI and GFCI coverage for areas like kitchens and laundry rooms. The device mounts exclusively into Siemens Plug-On Neutral (PON) load centers for a cleaner, faster gutter installation. Insta-Wire connectors and built-in self-testing capabilities further reduce contractor labor time on the job site.Specifications
| Brand | Siemens |
|---|---|
| Part Number | Q115DFN |
| Series | Q |
| Amperage | 15A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens Plug-On Neutral Load Centers |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LIG |
| Trip Function | Long-Time, Instantaneous, Ground Fault |
| Trip Adjustability | Fixed |
| Special Classification | Dual Function (AFCI/GFCI) |
|---|---|
| Available Options | Padlock Attachment |
| Standards | HACR, SWD, UL 1699, UL 489, UL 943 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated, Insta-Wire, Self-Test, Visual Trip Indicator |
Product FAQs
8 answersWhich load centers accept the Q115DFN?
This breaker requires a Siemens Plug-On Neutral (PON) load center. It cannot be installed in older panels that require a pigtail connection for the neutral.
What is the pigtail equivalent of the Q115DFN?
The Siemens Q115DF is the pigtail version, designed for use in standard Siemens panels that lack a plug-on neutral bar.
What does the dual function designation indicate?
It combines Class A 5mA Ground Fault Circuit Interrupter (GFCI) and Combination Type Arc Fault Circuit Interrupter (AFCI) protection into a single device to meet NEC requirements for kitchen and laundry circuits.
What is the terminal tightening torque for the Q115DFN?
Siemens specifies a tightening torque of 25 lb-in for the load terminals.
How does the plug-on neutral feature affect installation?
The breaker connects directly to the neutral bar in a compatible Siemens PON panel, eliminating the need to route and terminate a separate neutral pigtail.
Does the Q115DFN include a self-test feature?
Yes, it automatically and continuously tests itself to ensure the AFCI and GFCI functions are operating correctly. If a failure is detected, the breaker will trip and the LED indicators will blink.
How do the LED indicators function on this breaker?
The LEDs help diagnose the cause of a trip by indicating whether the circuit was interrupted due to an arc fault, a ground fault, or a standard overload.
Which padlocking device is compatible with the Q115DFN?
Use the Siemens ECPLD1 padlocking device for 1-pole breakers in this series.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 47 reviews.
Reviews Summary
Generated by AI from 91 most recent customer reviews
Last updated 8/1/25
Customers say these circuit breakers arrive quickly and match their specifications perfectly. Many reviews mention success finding hard-to-locate specialty breakers through this supplier. Common feedback includes praise for the accurate product descriptions, reliable shipping, and competitive pricing. While some note occasional stock limitations, users consistently report the breakers fit and function as intended.
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47 reviews
- CGCrocefissa G.Verified BuyerReviewingSiemens Q115 - 15A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars9/18/26Quick delivery and great price.
The circuit breakers are at a great cost.
- JBJason B.Verified BuyerReviewingSiemens Q2150B - 150A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/18/26Great experience
The product was exactly what I needed and it arrived on time.
- DQDon Q.Verified BuyerReviewingSiemens Q3100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/14/26Siemens breaker
Great customer experience, great prices and fast shipping... Definitely will be buying her again.
- CSChristopher S.Verified BuyerRated 5 out of 5 stars8/12/26Siemens 60
Perfect new condition
- GSGeorge S.Verified BuyerReviewingSiemens Q2150B - 150A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/4/26Great service
Every time I call or go online you have the parts I'm looking for.