These requirements cover Class K and Class R fuses having an additional D-C rating and that are intended for use in protecting trailing cables in D-C circuits in mines in accordance with the requirements of the United States Department of Labor@ Mine Safety and Health Administration.These fuses have a maximum current rating of 600 A@ a voltage rating of 300 or 600 V dc@ and an interrupting rating of 20@000 A dc.
UL 198M BULLETIN-2008 history
2018UL 198M BULLETIN-2018 UL Standard for Safety Mine-Duty Fuses (COMMENTS DUE: April 2@ 2018)
2018UL 198M-2018 UL Standard for Safety Mine-Duty Fuses (Fifth Edition)
2012UL 198M BULLETIN-2012 UL Standard for Safety Mine-Duty Fuses (COMMENTS DUE: October 22@ 2012)