Depending on the nature of the process and an analysis of the consequences of a failure, I’d probably install it and just keep an eye on it.
Agree w/ this approach.
You have not indicated what this contact is controlling. You mentioned worrying about the make and break arcing that DC contacts are subject to - but that's typically of concern with loads that are inductive. The collapsing magnetic field tends to want to keep current flowing as the circuit opens, and creates the arc as the contacts open.
I suspect your application is at the other end of concern - meaning very little current flow because the contact is wired into some PLC input?
This extremely low current flow issue is called the "wetting current" - the level of current necessary to break down and overcome any surface contact resistance (surface roughness / corrosion).
Years ago we were forced to run a CANBUS network thru a slip ring. We were concerned that the low current flow in a fieldbus like a CAN network would cause issues over the long run. With few options available at the time, we simply went ahead and tried it on the prototype and it worked just fine. And they were all working just fine 15 years later when we scrapped those machines.
You could always engineer in something like a 10K resistor at the PLC input to create additional current draw when the contact is closed. At 24VDC, that would draw 2.4ma, which should be way higher than the wetting current for typical silver oxide contacts. Just a thought.
But...I suspect that most PLC inputs are going to have some sort of internal pull-up or pull-down resistor when the input is floating, so there may be enough current flow anyway to overcome that wetting limit.
Ignore all the above if you are not driving a PLC input with this contact.
I'd simply go ahead and try it like it is. As long as the "consequences" that Retirede referred to are not something like a reactor SCRAM
