Hi Adam

> current ratings, the lowest I can find here is 500mA. I know that this
> is twice the specified current rating but would these be considered OK
> to use given that in the case of a short to ground they will still blow

The Fuse is used to prevent high currents if a shorting happens inside
the Transformer. If this happens currents far above 0.5A will happen and
the fuse will blow nevertheless.

And once again: these fuses do not shield the modules from problems on
the secondary (DC) side of the powersupply.

Florian