Overload Protection - tams elektronik FD-R Extended Series Manual

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4.7. Overload Protection

As soon as the maximum total current of the decoder is exceeded, the
decoder automatically temporally switches off, in order to protect itself
from overheating. This operation will be repeated until the overload has
been eliminated.
When the maximum current at one output is exceeded, but not the
maximum total current of the decoder, the overload protection of the
decoder is without effect, the output will be damaged.
Attention:
!
When a short circuit occurs that bypasses components on the decoder
either to each other or to track voltage, the overload protection is not
effective. Examples:

contact between the decoder and the rails or metal parts of the
vehicle;

contact between not-isolated decoder connecting wires and the rails
or metal parts of the vehicle;

contact between accessories connected to the common return
conductor of the decoder and the rails or metal parts of the vehicle.
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FD-R Extended