GRJ, I had never come across them when looking for half-reasonably priced magnetic breakers. To me, anything other than something that goes through a round hole is too hard to mount of a RR control panel, I do see there are some of those. However, since my Blue Sea breakers are doing their job, I don't think I'll replace them.
FWIW, while the electronic breaker in a PH-180 is very fast, often it is too fast, opening if a wheel flange brushes the center rail going through a switch.
As long as we're discussing breakers, I would note for those out in Forumland that breakers should also be put on accessory circuits
