Q: I work for a UL 508 panel shop, do I need to match the housing rating to my enclosure?

A: Yes. For UL 508A panel shops, the UL Type rating of the GracePort housing must match the UL Type rating of the enclosure. It cannot exceed or fall below the enclosure’s rating in order to maintain compliance (e.g., you cannot use a UL Type 4X GracePort on a UL Type 4 enclosure).

If UL 508A certification is not required, then the GracePort housing can exceed the enclosure’s rating without affecting functionality or safety.