Circuit breakers are available, which can be used to
divide the the railroad into several blocks for isolation
of faults (shorts) and to limit the maximum short circuit
The circuit breaker module automatically
and continuously attempts to reset three times per second,
until the fault is cleared. Each breaker can be set
to trip at the desired maximum value required for that
block. Thus, even though 10 amp supply
is being used, the maximum allowed in that block might be
only 2 amp. This prevents pitted wheels and melted
feeder and frog wiring.
The other advantage of using a breaker is
that a short in one block will not affect other blocks.
So, when someone runs a switch in the yard, the mainline
trains keep running.
Each module contains 2 circuit breakers.