Quick reference

DigiKey prints "Voltage rating: 70 V DC" for the 998 series and "70VDC" in this part's description; no AC rating is printed. Distributor fallback: Littelfuse's own pages and datasheet were not reachable to our tools, so this is DigiKey's statement, not a Littelfuse document. Littelfuse's datasheet prints "Voltage Rating: 70 V DC" in its Specifications table (PDF page 1); no AC rating is printed. Re-cited on November 2, 2026 to the manufacturer's own document; previously cited to DigiKey (digikey.com), which stays listed as an additional source.

Location: Features list, Voltage rating; "MEGA® Fuse - M6 Bolt Hole" table, row 0998300.UX-2M6

DigiKey prints "0998300.UX-2M6 FUSE AUTO 300A 70VDC AUTO LINK 70 V" (part number, description, DC voltage rating) for this part. Distributor fallback: Littelfuse's own pages and datasheet were not reachable to our tools, so this is DigiKey's statement, not a Littelfuse document. Littelfuse's datasheet prints "0998300._ 300" in its Ratings table (PDF page 2), the row for this rating under the family part number "0998xxx.UX-2M6 60 - 500 M6 2 500" of its ordering table (PDF page 1). Re-cited on November 2, 2026 to the manufacturer's own document; previously cited to DigiKey (digikey.com), which stays listed as an additional source.

Location: "MEGA® Fuse - M6 Bolt Hole" table, row 0998300.UX-2M6, Description column

Littelfuse's datasheet (PDF page 1) prints "Refer to: ISO 20934 - Type SF51" and the heading "MEGA® High Performance Series Bolt-down Fuses – Rated 70V-SF51". The earlier note's statement that no fuse class under a fuse standard is printed described DigiKey's page; the maker's datasheet prints ISO 20934 Type SF51. Corrected on November 2, 2026: the catalog had published MEGA 70 V high performance (998 series), cited to DigiKey (digikey.com). Littelfuse's own datasheet, now the primary source, prints the class: "Refer to: ISO 20934 - Type SF51" and the heading "MEGA® High Performance Series Bolt-down Fuses – Rated 70V-SF51". DigiKey's "High Performance 70 V MEGA" wording stays listed as the other source; the two agree. Earlier note: "DigiKey prints "High Performance 70 V MEGA® Automotive Bolt Down Fuses" with the 998 series name, and "Littelfuse's MEGA 70 V high performance (HP) automotive fuse". No fuse class under a fuse standard is printed. Distributor fallback: Littelfuse's own pages and datasheet were not reachable to our tools, so this is DigiKey's statement, not a Littelfuse document."

Location: PDF page 1, page heading and Specifications

DigiKey prints "Interrupting rating: 2500 A @ 70 V DC" in the features list of the 998 series highlight page, which lists this part; the page prints no figure per part. Distributor fallback: Littelfuse's own pages and datasheet were not reachable to our tools, so this is DigiKey's statement, not a Littelfuse document. Littelfuse's datasheet prints "Interrupting Rating: 2500 A @ 70 V DC" in its Specifications table (PDF page 1), for the whole series. Re-cited on November 2, 2026 to the manufacturer's own document; previously cited to DigiKey (digikey.com), which stays listed as an additional source.

Location: Features list, Interrupting rating

DigiKey prints "Operating temperature range: -40°C to +125°C" in the features list of the 998 series highlight page, which lists this part. Distributor fallback: Littelfuse's own pages and datasheet were not reachable to our tools, so this is DigiKey's statement, not a Littelfuse document. Littelfuse's datasheet prints "Recommended Environmental Temperature: –40 ˚C to +125 ˚C" in its Specifications table (PDF page 1); it names the range a recommended environmental temperature. Re-cited on November 2, 2026 to the manufacturer's own document; previously cited to DigiKey (digikey.com), which stays listed as an additional source.

Location: Features list, Operating temperature range

DigiKey lists this part under the heading "MEGA® Fuse - M6 Bolt Hole". Distributor fallback: Littelfuse's own pages and datasheet were not reachable to our tools, so this is DigiKey's statement, not a Littelfuse document. Littelfuse's datasheet prints "0998xxx.UX-2M6 60 - 500 M6 2 500" in its ordering table (PDF page 1; columns Part Number, Current Rating (A), Bolt Size, Bolt Hole Qty., Package Size), and its dimension drawing (PDF page 2) gives the hole as "M6: ø 6.6" mm. Re-cited on November 2, 2026 to the manufacturer's own document; previously cited to DigiKey (digikey.com), which stays listed as an additional source.

Location: "MEGA® Fuse - M6 Bolt Hole" table heading

DigiKey prints "0998300.UX-2M6 FUSE AUTO 300A 70VDC AUTO LINK 70 V" for this part and "Voltage rating: 70 V DC" in the series features list. Distributor fallback: Littelfuse's own pages and datasheet were not reachable to our tools, so this is DigiKey's statement, not a Littelfuse document. Littelfuse's datasheet prints "Voltage Rating: 70 V DC" in its Specifications table (PDF page 1). Re-cited on November 2, 2026 to the manufacturer's own document; previously cited to DigiKey (digikey.com), which stays listed as an additional source.

Location: "MEGA® Fuse - M6 Bolt Hole" table, row 0998300.UX-2M6, Voltage Rating - DC column