1 Scope

This Part applies to Class R fuses rated 600 A or less and either 250 or 600 V ac. DC ratings are optional.

Summary of Topics

This revision to ANSI/UL 248-12 dated November 14, 2022 is being issued to update the title page to reflect the most recent designation as a Reaffirmed American National Standard (ANS). No technical changes have been made.

As noted in the Commitment for Amendments statement located on the back side of the title page, UL, CSA, and ANCE are committed to updating this harmonized standard jointly. However, the revision pages dated November 14, 2022 will not be jointly issued by UL, CSA, and ANCE as these revision pages only address UL ANSI approval dates.