MTH Z4000 onboard breakers not tripping

oldschoolrailOGR Forum Member

I have a new to me used z4000 transformer. I ran it for the first time tonight. I have an upper track and lower track...so I'm using both sides of the transformer. I noticed when I had a derailment that the onboard circuit breaker(s) didn't trip as they did quite quickly on my two lionel transformers (cw80 and gw180). I tested the track by shorting out the center and outer rail with a screw driver and although I got sparks and almost welded the screwdriver to the track, the circuit breaker still did not trip. Any suggestions? Or is this normal?

11/26/162:18 AM

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