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Siemens Q120AFP AFCI Miniature Circuit Breaker
- 20A
- 1 Pole
- Plug-On
Siemens
Q120AFP
AFCI Miniature Circuit Breaker
Brand
Siemens
SKU
Q120AFP
Quantity
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Siemens Q120AFP - 20A AFCI Miniature Circuit Breaker
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Description
Part of the QP family, the Siemens Q120AFP delivers 20A branch/feeder arc-fault protection. This single-pole breaker utilizes a standard pigtail neutral connection for reliable residential operation. It mounts into Siemens EQ, EQL, SEQ, EQG, PL, and ES load centers. As an older branch/feeder model, it is commonly used for replacements and is superseded by the QA120AFC combination AFCI. Rated for 10kAIC at 120VAC, this unit features an LED trip indicator and is HACR and SWD rated.Specifications
| Brand | Siemens |
|---|---|
| Part Number | Q120AFP |
| Series | Q |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | Plug-On |
| Voltage | 120VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120VAC |
| Frame Type | Q |
|---|---|
| Terminal Type | Lugs |
| For Use With | Siemens EQ, EQL, SEQ, EQG, PL, ES Load Centers |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | AFCI |
|---|---|
| Available Options | Padlock Attachment |
| Accessories | Pigtail Neutral |
| Standards | HACR, SWD, UL 1699, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, SWD Rated, Insta-Wire, Visual Trip Indicator |
Product FAQs
7 answersWhich Siemens load centers accept the Q120AFP breaker?
This breaker is compatible with Siemens EQ, EQL, SEQ, EQG, PL, and ES series load centers.
Does this breaker require a plug-on neutral load center?
No. The Q120AFP features a standard pigtail neutral wire that connects directly to the neutral bus bar, making it suitable for older panels that do not support plug-on neutral (PON) breakers.
What is the difference between the Q120AFP and the QA120AFC?
The Q120AFP is an older branch/feeder AFCI breaker. It has largely been superseded by the QA120AFC, which is a combination AFCI breaker that detects both parallel and series arcing faults. Both models utilize a pigtail neutral connection.
What type of arc fault detection does the Q120AFP offer?
This model provides branch/feeder arc fault protection. It detects parallel arcing faults but does not include the series arc detection capabilities found in newer combination AFCI breakers.
Can the Q120AFP replace a standard 20A Siemens QP breaker?
Yes, it shares the same 1-inch plug-in footprint as a standard QP breaker. Upgrading to this AFCI model requires routing the attached pigtail wire to the neutral bus bar.
Is the Q120AFP HACR and SWD rated?
Yes, this breaker carries both HACR and SWD ratings. It is approved for use with heating, air conditioning, and refrigeration equipment, as well as for switching duty applications.
Does the Q120AFP include a trip indicator?
Yes, this breaker features an LED trip indicator to help quickly identify the cause of a fault when troubleshooting a tripped circuit.
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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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Rating
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.