ulharm-4248-12.2Fuseholders - Part 12: Class R
UL 4248-12
1.1 Scope
1.1.2 These requirements cover fuseholders intended for use with Class R Fuses as described in NMX-J-009/248/12-2000-ANCE, CSA C22.2 No. 248.12, UL 248-12, Low-Voltage Fuses - Part 12: Class R Fuses.