Anyone replaced Fuse with Circuit Breaker?

JUST like MOV devices in surge protectors, Circuit Breakers 'age' poorly and change with repeated cycling. Other articles testing really HUGE breakers say calibration is needed after a trip.

Read the conclusions of the article I cited. Time lag may not be an issue. Besides, if it were, you'd still have possible replacement for Slo-Blo on the table.

and though, like the rest of us HIFi is right and wrong at different times and to different degrees, the 'How often does the fuses in your amp fail?' remark is spot on.
Are breakers a solution in search of a problem?
Since I've NEVER blown a fuse in my panels, I'll eventually do some wiring changes to both simplifiy and eliminate the fuse. Problem solved.

The OP of the thread amps have a setup similar to what I'm familiar with. The slow-blow fuse is on the back, for easy user replacement if needed. This one will handle the turn on inrush needed, especially more so to charge the power supply caps. The fuses that help protect the semiconductors inside the amp, has the fast-blo fuses inside.

Due to the 0.100 second resolution in our testing equipment, we were unable accurately to compare the response times of the devices to a massive over-current condition such as would result from, say, a short circuit. That is, when we applied 10 times the rated current, both devices reacted within 0.100 seconds. This time suggests that either device would be adequate in applications where the goal is to protect circuit power wiring as opposed to protecting the circuit itself.

What this person has written even seems to match with the amps protection, to a degree. In the article, he is mainly concerned with a fire (wire overload) in the plane from the way I read it. If something fails on the inside of one the aircraft's components, hopefully he has a second (radio for example) for backup, and can make it safely to an airport.
Link for the OP of the thread amps.[http://www.classeaudio.com/downloads/pdfs/archived%20manuals/CAM-200_Owners_Manual_v1_0.pdf]

And don't forget that their is another class of fuse which is VERY fast acting and used to protect delicate semiconductors in certain applications.

Personally, I'll stick with fuses. Inexpensive, reliable and need no special attention.

Breakers make perfect sense in some applications. A breaker can be used to shut off an entire circuit....use it as a switch, maybe.

Private planes don't generally need electricity to fly but DO use plenty of power for avionics. The spark plugs are fired by Magnetos, maybe still. I've seen commercial with an extendible air powered genset to provide minimal power to controls in the event of a catastrophic power fail. A similar unit is STC'd for several planes as an add-on. (STC=supplimental type certificate)

Thanks for the very informative input so far. It seems the main stream audio designers go with fuses (cost savings and/or ease of export to the myriad voltages and resulting current ratings?) while a couple of designers and mod shops do promote the sonic advantages of CBs.

I am still weighing what CB would be an "or equal" to a 5 Amp slow blow fuse, and if I have space in the fairly large enclosure. I did make a DH 120 kit amp in the 80's - albeit with better eyesight.

Ryanvt, this is all new to me. I haven't heard of any breakers for audiophile gear like your speaking of. With the breakers I've seen, I don't see how they can make a more solid connection than a fuse whose connection is solid inside. No breaks in a fuse that can make noise. I wouldn't know where to begin on recommended a breaker to replace the miniature fuse in an amp, especially one that can maintain a more solid connection.

In the '60s or '70s, I remember companies started using breakers on TV sets. They called a lot of them "reset" buttons. These were mass production, and I imagine they tried to save every penny making them. Then about the time they went all solid state, they went back to fuses for some reason.

Even the new D'Agostino amp appears to have a standard fuse on its case back. Link [http://www.dagostinoinc.com/]

I would like to provide info if I could.