Allen Bradley IFM Module Fusing

I have some output modules wired to IFM modules and I need fuses for the IFM modules. The manual says they use 5x20 fuses so I take that to mean the 5x20 mm kind.

Looking here at Mersen http://ep-us.mersen.com/products/catalog/type/5x20mm/

There are many types in both fast acting and time delay. I am assuming time delay is best as they will be powering contactor coils and such.

I have both 24 VDC IFM's and 120 VAC IFM's that I need to get fuses for. How would I go about choosing between these? I can't seem to see a lot of difference in them.

My only experience with those fuses was with several solenoids (57 VA)@120 vac, I used 0.5 amps delay time fuses.