These requirements cover fuseholders intended for use with Class CF Fuses as described in the Outline of Investigation for Low-Voltage Fuses ?C Part 17: Class CF Fuses@ UL 248-17.
UL SUBJECT 4248-17-2018 history
2018UL SUBJECT 4248-17-2018 UL Outline for Investigation Fuseholders – Part 17: Class CF Fuses (Issue 2)
2010UL SUBJECT 4248-17-2010 OUTLINE OF INVESTIGATION FOR Fuseholders - Part 17: Class CF Fuses (Issue 1)