Bussmann JJS crosses to Marathon Special Products CT6. Both are Class T fast acting fuses rated 600 VAC. The table lists all 30 ratings from 1 A to 800 A, with the Mersen A6T and Littelfuse JLLS numbers on the same line. Every line is an exact amp-for-amp match.
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Bussmann JJS to Marathon CT6 cross reference
| Bussmann | Amps | Marathon | Mersen | Littelfuse |
|---|---|---|---|---|
| JJS-1 | 1 A | CT6-1 | A6T1 | JLLS001 |
| JJS-3 | 3 A | CT6-3 | A6T3 | JLLS003 |
| JJS-6 | 6 A | CT6-6 | A6T6 | JLLS006 |
| JJS-10 | 10 A | CT6-10 | A6T10 | JLLS010 |
| JJS-15 | 15 A | CT6-15 | A6T15 | JLLS015 |
| JJS-20 | 20 A | CT6-20 | A6T20 | JLLS020 |
| JJS-25 | 25 A | CT6-25 | A6T25 | JLLS025 |
| JJS-30 | 30 A | CT6-30 | A6T30 | JLLS030 |
| JJS-35 | 35 A | CT6-35 | A6T35 | JLLS035 |
| JJS-40 | 40 A | CT6-40 | A6T40 | JLLS040 |
| JJS-45 | 45 A | CT6-45 | A6T45 | JLLS045 |
| JJS-50 | 50 A | CT6-50 | A6T50 | JLLS050 |
| JJS-60 | 60 A | CT6-60 | A6T60 | JLLS060 |
| JJS-70 | 70 A | CT6-70 | A6T70 | JLLS070 |
| JJS-80 | 80 A | CT6-80 | A6T80 | JLLS080 |
| JJS-90 | 90 A | CT6-90 | A6T90 | JLLS090 |
| JJS-100 | 100 A | CT6-100 | A6T100 | JLLS100 |
| JJS-110 | 110 A | CT6-110 | A6T110 | JLLS110 |
| JJS-125 | 125 A | CT6-125 | A6T125 | JLLS125 |
| JJS-150 | 150 A | CT6-150 | A6T150 | JLLS150 |
| JJS-200 | 200 A | CT6-200 | A6T200 | JLLS200 |
| JJS-225 | 225 A | CT6-225 | A6T225 | JLLS225 |
| JJS-250 | 250 A | CT6-250 | A6T250 | JLLS250 |
| JJS-300 | 300 A | CT6-300 | A6T300 | JLLS300 |
| JJS-350 | 350 A | CT6-350 | A6T350 | JLLS350 |
| JJS-400 | 400 A | CT6-400 | A6T400 | JLLS400 |
| JJS-500 | 500 A | CT6-500 | A6T500 | JLLS500 |
| JJS-600 | 600 A | CT6-600 | A6T600 | JLLS600 |
| JJS-700 | 700 A | CT6-700 | A6T700 | JLLS700 |
| JJS-800 | 800 A | CT6-800 | A6T800 | JLLS800 |
All Marathon CT6 fuses on this page are Class T, fast acting, 600 VAC. Matching rule: same fuse class, same voltage, same operating type and the exact amp rating. No nearest-rating substitutions.
600 V or 300 V Class T?
Class T comes in two voltage ratings with different body lengths. CT6 is the 600 VAC fuse and crosses Bussmann JJS. CT3 is the 300 VAC fuse and crosses Bussmann JJN. Check the voltage on the print before you swap.
Common questions
What is the Marathon equivalent of Bussmann JJS-100?
Marathon Special Products CT6-100 is the Class T fast acting fuse at 100 A and 600 VAC. Mersen A6T100 and Littelfuse JLLS100 are the same rating.
What voltage is Marathon CT6?
CT6 is rated 600 VAC. The CT3 series is the 300 VAC Class T fuse that crosses Bussmann JJN.
Which Marathon fuse crosses Mersen A6T or Littelfuse JLLS?
The same CT6 catalog number. Match the amp rating: A6T200 and JLLS200 both cross to CT6-200.
What amp range does Marathon CT6 cover?
The CT6 ratings on this page run from 1 A to 800 A, 30 ratings in all.
Get a cross-referenced quote
Send the Bussmann, Mersen or Littelfuse part number and the quantity. We send back the Marathon match, the lead time and a quote. Need help with fuses and holders for a panel? Book a time and we will go through the application.
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More cross references: all cross references · Bussmann LPJ to Marathon CJ-T · Bussmann JKS to Marathon CJ-F · Bussmann KTK-R to Marathon CC-F · Marathon Special Products collection
Bussmann and JJS are trademarks of Eaton. Mersen and A6T are trademarks of Mersen. Littelfuse and JLLS are trademarks of Littelfuse, Inc. Applied Control Inc. is not affiliated with, endorsed by, or sponsored by these companies. Competitor part numbers appear here only to identify products for comparison. Confirm the final selection against the current manufacturer datasheets before purchase or installation.