Reply to "Post war ZW transformer circuit breaker pops after 5 - 10 minutes of running 3 trains simultaneously; what's up?"

Dave,

Internally, use one of the specifically designed replacements for the ZW:

Z22: Image result for lionel Z 22

ZW-232: Image result for lionel zw-232

Modern Automotive Bussmann 19115 assembly:

Externally, I have known people to use PTCs (like the one you mentioned) attached to a terminal block for each individual output, but they take time to trip. You are much better off with a fast acting circuit breaker, many which have been discussed on the forum.

2/27/174:53 PM

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