The NCE 5240025 Power Cab is one of the most useful tools a model railroader can have on their work bench. In addition to being one of our favorite DCC starter sytems, the Power Cab can also be used as a powerful diagnostic and programming tool for testing and operating DCC decoders.

The NCE 5240266 Program Track Auto Switch allows you to set up a dedicated program track. Under normal operating conditions, both the mainline and program track are powered allowing you to control locomotives on both tracks.

When the Power Cab is used in "Program Track Mode", the Auto Switch automatically disconnects power to the mainline. This prevents accidentally programming all locomotive decoders on the mainline. This does not affect Program On Main mode.

Note the position of the PSXX circuit breaker. This is placed between the Power Cab PCP and the Auto Switch to protect decoders and locomotives on both tracks.