The following changes in requirements are being proposed: 1. Proposed Third Edition of the Standard for Low-Voltage Fuses - Part 12: Class R Fuses, UL 248-12.
ANSI/UL 248-12-2011 history
2011ANSI/UL 248-12-2011 Standard for Safety for Low-Voltage Fuses - Part 12: Class R Fuses