Put a transient voltage suppressor (TVS) between each output terminal (A through D) and the common terminals (U). Do a search of the forum for advice about sources and part numbers.
It's also a good idea to put a circuit breaker or fuse in series with each output terminal. The best circuit breakers for this application are auto-resetting thermal automotive fuses, which you can find at auto parts stores. Use a circuit breaker appropriate for the wire size that you are using, but no more than 15 amperes.
Bob Nelson
I hve a zw transformer and i was woundering what i can put on the hot wire to protect trains that have chips and boards from burning out from surges.
Our community is FREE to join. To participate you must either login or register for an account.
Get the Classic Toy Trains newsletter delivered to your inbox twice a month