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.
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.