AB relay output contact ratings

[Mickey]

I'm talking about the same voltage here - say 24VDC Input signal to 24VDC relay, switching 24VDC to Input module, just for Isolation.

Overkill?

I wonder, does anyone do it as standard?

I did.

 

[GTUnit]

I would STRONGLY recommend using Relays.

This way there is no transient suppression built in and inductive loads will make short work of the Cards tiny relay contacts.

I have used these SLIM IDEC relays and I am happy with them.
Transient suppression built in.
LED Built in.
Easy to swap bad relay.

http://us.idec.com/Catalog/ProductSeries.aspx?SeriesName=RV_Series