Reply to "how to add circuit breakers to my old KW and ZW transformers (to safely run TMCC power)?"

And I still like those.  Magnetic breakers are much better than the thermal breakers, the response is way faster.

I actually use and old pre-war #91 breaker on my test bench when I'm testing stuff that I'm unsure if it'll try to draw excessive current.  It beats the 2A thermal breaker on my test bench every time when there's excessive current draw.  The thermal breaker will supply 4-5 amps for seconds before tripping.