I've had good service from Airpax circuit breakers. They are lots faster than an automotive fast blow fuse, or the breaker on an Lionel 180 brick, and you can choose how much delay you want, so the breaker won't trip every time you get a spark somewhere. In addition to an Airpax I also second the notion of having a TVS on each transformer output tap; between the transformer and the load (track, TIU or DCC device)
|