⚡ Power up your safety game with Siemens’ smartest AFCI breaker!
The Siemens QA120AFC is a 20-Amp, single-pole Combination AFCI breaker designed to protect your home from both parallel and series arc faults. Featuring LED trip indicators for quick fault diagnosis and enhanced wiring convenience with extra wire bend space and uniform lug angles, it delivers reliable, professional-grade circuit protection. Ideal for modern electrical safety needs, it combines Siemens’ trusted quality with user-friendly installation.




| ASIN | B00J59DYLO |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #28,958 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 in Arc Fault Circuit Breakers |
| Brand | SIEMENS |
| Circuit Breaker Type | AFCI |
| Color | Siemens QA120AFC |
| Current Rating | 20 Amps |
| Customer Reviews | 4.5 4.5 out of 5 stars (793) |
| Date First Available | August 11, 2012 |
| Global Trade Identification Number | 00887621216252 |
| Included Components | breaker |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 4.8 ounces |
| Item model number | QA120AFC |
| Manufacturer | SIECV |
| Material | Plastic |
| Mounting Type | Plug-In Mount |
| Number Of Poles | 1 |
| Part Number | QA120AFC |
| Pattern | Cardboard Packaging |
| Product Dimensions | 30"D x 8"W x 6"H |
| Size | 20-Amp |
| Style | 1 Pack |
| UPC | 784497742062 887621216252 887621216283 789911824089 |
| Voltage | 120 Volts |
| Warranty Description | 1 Year |
V**C
Quality product
Purchased this after my previous breaker kept tripping even though only my fridge was on this breaker. Replaced it with this product and everything works great. Easy to install
D**S
Good delivery, perfect product, very competitive price
Absolutely perfect.. and installed within 15 mins.. Delivery was left exactly where instructed as well.. That's how good business is done..
M**S
Same as pictures
And it worked perfectly too.
F**A
Muy necesario
A**5
Arrived fast but never used it
Great shipment speed but we found the arcing current in our house, which led us to return this because our circuit breaker is still good. We checked obvious locations on the circuit like the outlets and unplugged everything but we missed the ceiling fan. The ceiling fan has a pull chain, which was entangled on the lightbulb base in the light fixture. Even though the light was off, there was just enough interference to cause this to trip the breaker. It was a tough find but I encourage anyone looking to replace a breaker to look EVERYWHERE they can first.
M**2
Great
Super easy to install. Ran flood lights and power post to backyard works like a champ
A**O
False arc detection like the old CAFCI
This is a new model so I was expecting something better. They trip like the old CAFCI breakers for unknown reasons. I had to put back a regular 20A circuit breaker one more time. Nothing wrong with wiring and outlets, checked multiple times.
C**G
My old AFCI breaker kept tripping - This works as advertised
My old AFCI breaker kept tripping. My options were to get an electrician to find out why it suddenly started tripping or replace the breaker with a new one. Replacing it was much cheaper than getting an electrician, and the new breaker is not tripping. It works great.
A**R
Good
D**S
I replaced a circa 2007 Siemens AFCI with this newer combination AFCI. The old AFCI would always trip when a transfer switch was used to change from LINE power to GENERATOR power. I have learned that some of the older AFCI's are not very tolerant of the less than pristine power produced by a generator thereby causing it to trip. Since I swapped out the old AFCI and replaced it with this combination AFCI I have not experienced any false trips while running on generator power. Installation is straight forward, just be sure to cut all power to your service panel before attempting.
M**F
installation smoothly
S**P
What more can a person say, this is a bog standard Siemens 20 amp arc fault breaker. What really impressed me was after not being able to easily locate this size (lots of 15 amp) at my standard suppliers in Saskatoon, SK (everyone was sold out), was a less than 24 hour delivery time to my door.
W**H
The product is easy to install, I just don’t like the additonal mandatory expense.
Trustpilot
3 days ago
1 week ago