It is perfect and cheaper than Home Depot.

I recently bought an older home (built 1958.) The house was wired with 2-strand and fuses. Before closing, we had the panel replaced with a modern load center stocked with these breakers on every circuit.We then began renovating the house. During the first week, there were three instances where these breakers tripped. On one occasion, my wife pushed a child proofing plug into an outlet, and a spark flew out. The breaker immediately tripped and everyone was safe. When I opened the box (which was in masonry) the outlet was badly corroded. The metal box the outlet was in was powder, and the pressure of pushing in the plug dislodged some and caused a dangerous fault. The breaker might have prevented an incident. We of course don't know, but we do know that tripping under those circumstances is what these are supposed to do.The second instance involved a light fixture. It was very old, and being 2-conductor lacked a ground wire. The breaker tripped when you turned the light on, and inspection revealed that the hot wire inside the fixture had lost some insulation and was sometimes in contact with the housing of the fixture, causing sparking, and again, this is what is supposed to happen, the breaker "saw" the arcing and tripped.On the third instance, I flipped on a ceiling fan and the breaker tripped. It took some searching but it caused us to discover a bad situation - that a c.1979 addition to the house had been wired with aluminum, and the tie-in to the copper circuit was done using standard wire nuts - a big no-no, and a huge cause of fires. There was bad galvanic corrosion in the connection. A standard breaker would probably not have tripped; it would have just run very hot through that connection. There was serious heat stress, the nuts were melted, the insulation in the attic was discolored from heat, and the corrosion had caused a fault that the breaker "saw" and tripped. It probably prevented a fire.We replaced the faulty fixtures, and corrected the aluminum wire situation. No one even knew the aluminum was there, including two housing inspectors, and the VA-loan appraiser. It was easy to miss because it didn't go back to the box, it was tied into a branch circuit when they made the addition. No one knew it was there, but the breaker did, and it did it's job when the connection failed.Six months later, we have had a house full of these breakers, and zero nuisance trips. Not one. We have done remodeling, and run multiple air compressors, big and small vacuum cleaners (including a massive air duct cleaning machine that ServPro brought in, it was so big it had two cords to draw from two household circuits) and every kind of power tool you can imagine. Circular saws, reciprocating saws, yard tools. We have had building contractors in here, and they have brought tools, that have also not nuisance tripped the breakers. I have a gas stove that makes arcs for ignition, and no false trips. These have only ever tripped when they were supposed to, on those two occasions when sparks were created by a dangerous situation. They have figured out how to filter out the normal arcing from motors that are running correctly. I can't say they never nuisance trip for anyone, but I can say that none of them ever have for me. Not once.This house is over 3500 square feet and there are a 20 combination AFCI's from this series, some 15-amp, some 20-amp, and one 2-pole 20-amp on a multi-wire circuit. They are all from this series of Siemens product. They run everything in the house, and also out in the pump house (including a big well pump.) There just haven't been any issues.I was reluctant to use these at first, because of the grumbling and griping of people who seem irritated by the fact that code sometimes requires them, and they cost more. In their defense, the technology was immature when it first hit the market - but that was over 20 years ago, and they really seem to have worked the bugs out of the system. If these things were going to false trip they would have done it by now. I think the griping is mostly generated by resent that code is requiring a more expensive product in some places, and lingering bad feelings over the false tripping that must have been more common with earlier models. These just don't appear to do it, and you can't tell me that they don't detect the arcing that will kill you or burn down your house. They did it for me, twice.30 bucks or so is a lot for a breaker compared to 4 bucks for a standard one. But when you consider the job - protecting your wiring - these things are a bargain, and the griping at this point is looking pretty absurd to me. Seriously, you're not willing to spend 25 bucks to keep someone from being electrocuted, or your house burning down, if there is a serious fault? My experience is that they really do that. And 25 bucks more is too much? I'll probably never install a standard breaker again if a box can accommodate these, and you can call me an industry apologist, but the reality is that these things have never caused me a single problem. Zero nuisance trips. Zero, and they may have saved my wife's life. I'd pay the cost of these things a thousand times over. They are right to require them by code. They are a far superior product to standard breakers, and their presence makes a circuit safer by leaps and bounds. This is especially true if you have an older house, like mine, and replacing all the 2-conductor wiring is impossible or impractical. This is an easy upgrade if you can get them in your box, and it affords tremendous protection.

Just what I expected.

Arc faults are tempermental for sure, but half of these are dead out of the box. 4 of the 8 purchased trip after about 2 mins of being turned on. Electrician has trouble shot the circuits and the only issue is these breakers. He figures they are an old lot sitting on a warehouse shelf sitting somewhere. New ones purchased at a box store have no issues on the same circuits.

The product was useless. My regional building department does not allow there use. They are obsulete. I can only use the afic combination type. I tried to send them back but amazon did not respond to my request. I am very dissappointed with the purchase.

See my review on the Murray AFCI. Same comment. Siemens makes good equipment. It's just that the building codes (which come down from the International Building Codes) are over regulating for the protection they give and causing great inconvenience to the end user. This is a conflict within the State Consumer protection agencies >> fire protection versus construction building inspection and plan approval. Only your State legislatures can fix this by opting out of this regulation for new construction. I've used the Murray, Siemens, and Square D ones and they will all pop if you use a tool with an armature on the circuit protected by these switches. Write/call your legistative rep. If you are doing a remodel or new construction, buy the cheapest (Amazon's prices were cheaper then my local electrical supply house, or big box stores) because you need to have it in place for inspection sign-off. Being a retired aerospace engineer(47 years) and general contractor (23 years licensed with 55 years experience in construction) I tried all three makes on this retirement remodel project that I just finished, and found the problem to be between the new codes and the use with tools like shop vac's, leaf blowers, etc which have arcing type motors in them. So the end users get caught with the pain. Amazon has the cheapest prices for these, buy the cheapest from these three electrical supply providers to get past inspection sign-off.

I would like to recommend this item to the other personals. This is a good price with proper function and quality.