Issue:
Difference between S and VS designations on trim part numbers

Product Line:
NQ and NF Panelboard

Environment:
Products sold in North America

Resolution:
The NC74S is a standard trim has a much larger door opening than the NC74VS which is a vented trim with louvers (vents) at top and bottom.
Vented trims are required for panels rated 400A or higher.

Released for: Schneider Electric USA