Ok,
Thanks for the explanation Bob.? So it IS symptom curing ( minimizing the effect of human error ?)
Am I right, that the sole supply to that breaker is the Track-Out power from the booster ? If so, then there probably lies the problem: The YD7001/YD7403/DR5033 cut the power immediately ( within a single DCC packet's duration ) as soon as a short and/or overcurrent is detected.
They will then retry pulsing the power back on in about a 10ms time interval until the short-delay expires.
This method is needed to fill-up any buffer capacitors in all kinds of equipment, including loco(sound)decoders. Those capacitors often pose a "short" during initial charging.
Greets,
Karst
karst.drenth