I would like to know if it is necessary (or recommended) to add fuses at the inputs when using multiple DC-DC converters. I have attached a quick schematic to illustrate what the design would look like if fuses are involved.
I guess in principle the fuses are there to protect the other DC-DC converters in case one becomes shorted.
However the DC-DC converters I plan to use seem to advertise "continuous short protection" and various other protections as well (ex: PYB20-Q48-S12 from CUI Inc.).
Are fuses really necessary if there is already protection in place? Would I be doing potentially more harm than good by adding them to the circuit? (ie: if I end up selecting fuses with incorrect thresholds)