I'm looking for a method of protecting a circuit against shorting.
I would rather not use a regular fuse as I expect I will short the circuit (unintentionally) fairly often (probably once or twice each time I use it) and so I would end up getting through a lot of fuses.
I've looked online but all I seem to be able to find are breakers for din rails which are very high current.
I've seen some power supplies which have an LED which lights up if you short them and this is something I'd quite like to go for but I don't know how it was done.
What sort of thing should I be searching for?
Sorry, I was a bit short on details last night when I posted this.
The application is a model railway system.
My intention is to run 16V AC along all the rails and then have a controller board on each train engine with an mcu so that they can have sensors and be programmed.
The reason it could be shorted is because tools and such may be (accidentally) placed across the rails or whatever.
The under normal operation current is going to be anything up to maybe 5 amps.