ac and dc ratings

[ches2443]

Is there a calculation that could be used to convert a AC voltage rating to a DC volt rating, that could be used for safety switches or relay contacts.

 

[jim dungar]

Is there a calculation that could be used to convert a AC voltage rating to a DC volt rating, that could be used for safety switches or relay contacts.

There is no general method to do this, although specific devices may have adjustment factors.