Mouser 10 amp resettable breaker #.... thermal. Part number is on the breaker---just change 10 to 7 or whatever rating you need.
These things scare me. Too much reading and not enough knowledge. I purchased a couple of 7A and never used them. The time to trip is rated at 2.2 seconds at 200%. Not the kind of thing that I wanted to protect my trains. Even at 7A it would theoretically be too slow 14A for 2.2 seconds would be the fastest. I suppose it's better than the ZW or older transformers, but not what I was looking for.
Do these (10A) actually trip if you jump a wire quickly like the PSX-AC demo?
Anyway, the whole thing spooked me, so I got ZW-C with the 180W bricks. They trip like the PSX-AC.
The TVS are a little spooky, too. You really don't know when one has failed. They can fail and not melt and still show continuity. So, I just decided to change them once a year. But, it sure is something worth having and they have low fail rates, especially at the voltages we use.
The automotive blade type ATC fast-acting fuse may be the easiest to source. But, even the time to melt curve on those looks scary. I know when I short a power adapter socket in the car I can get quite an amperage surge from the battery, but our transformers are only 10A or so. Do they actually melt fast? I know the AGX (glass tube\fast blow) type are getting hard to find.
Can anyone shed some light on my electrical ignorance?
