JLLN Series - UL Class T Fast-Acting Fuse

JLLN Fuses
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Space saving POWR-GARD Class T fuses are the most compact fuses available in ratings above 30 amperes — less than one-third the size of comparable Class R fuses. When rated in accordance with the NEC, Class T fuses provide fast-acting overload and short circuit protection for non-inductive circuits and equipment. Used in inductive circuits, the ampere rating of Class T fuses must be increased to prevent opening on inrush currents. In such instances, Class T fuses may provide only short circuit protection.

For motor and general purpose circuits where space is not critical, we recommend POWR-PRO™ JTD_ID Indicator series, LLNRK/LLSRK series, or FLSR_ID Indicator series.

Applications:
  • Protection of individual electric services and meters.
  • Main switches containing Class T fuses may be used to provide compact protection for meter stacks.
  • Molded case circuit breaker load centers and panelboards have increased interrupting ratings when “series rated” with Littelfuse Class T fuses. Refer to panelboard manufacturers’ literature for UL Listed combination of fuses and panelboards.
  • Series ratings up to 200,000 amperes are available.
Space Saving:
  • Typical three-pole Class T fuse blocks require less than 50% of the panel area required for Class R fuse blocks. Switch enclosures, fuse pullouts, and other equipment using Class T fuses are often correspondingly more compact.
Safety:
  • 200,000 A.I.R. — Reliable interruption of all overcurrents up to 200,000 amperes.
  • Extremely current limiting — Stops damaging short circuit current faster than any mechanical protective device.
  • Fast-Acting — Provides fast-acting overload protection to equipment such as variable speed drives, rectifiers and other equipment containing surge-sensitive components.
Longer Equipment Life:
  • Current limiting design greatly reduces damage to equipment caused by heating and magnetic effects of short circuit currents.
Economical:
  • Extremely current limiting design often permits use of readily available, less costly equipment.
  • Used as input or output fuses for surge-sensitive components, such as variable speed drives and rectifiers, fast-acting Class T JLLN/JLLS fuses may prevent opening of expensive semiconductor fuses protecting individual components.

Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)VAC (V)VDC (V)Interrupting RatingOpeningSizeStockSamplesCompare
JLLN001130016020000A@125VDCFast-Acting (F)Industrial CartridgeCheckOrder
JLLN001P130016050000A@160VDCFast-Acting (F)CheckOrder
JLLN002230016020000A@125VDCFast-Acting (F)Industrial CartridgeCheckOrder
JLLN002P230016050000A@160VDCFast-Acting (F)CheckOrder
JLLN003330016020000A@125VDCFast-Acting (F)Industrial CartridgeCheckOrder
JLLN003P330016050000A@160VDCFast-Acting (F)CheckOrder
JLLN006630016020000A@125VDCFast-Acting (F)Industrial CartridgeCheckOrder
JLLN006P630016050000A@160VDCFast-Acting (F)CheckOrder
JLLN0101030016020000A@125VDCFast-Acting (F)Industrial CartridgeCheckOrder
JLLN010P1030016050000A@160VDCFast-Acting (F)CheckOrder
JLLN0151530016020000A@125VDCFast-Acting (F)Industrial CartridgeCheckOrder
JLLN015P1530016050000A@160VDCFast-Acting (F)CheckOrder
JLLN0202030016020000A@125VDCFast-Acting (F)Industrial CartridgeCheckOrder
JLLN020P2030016050000A@160VDCFast-Acting (F)CheckOrder
JLLN0252530016020000A@125VDCFast-Acting (F)Industrial CartridgeCheckOrder
JLLN025P2530016050000A@160VDCFast-Acting (F)CheckOrder
JLLN0303030016020000A@125VDCFast-Acting (F)Industrial CartridgeCheckOrder
JLLN030P3030016050000A@160VDCFast-Acting (F)CheckOrder
JLLN0353530016020000A@160VDCFast-Acting (F)Industrial CartridgeCheckOrder
JLLN035L3530016020000A@160VDCFast-Acting (F)PCB MountCheckOrder
JLLN035LS3530016020000A@160VDCFast-Acting (F)CheckOrder
JLLN035LSE3530016020000A@160VDCFast-Acting (F)CheckOrder
JLLN035P3530016020000A@160VDCFast-Acting (F)CheckOrder
JLLN035V3530016020000A@160VDCFast-Acting (F)CheckOrder
JLLN0404030016020000A@160VDCFast-Acting (F)Industrial CartridgeCheckOrder
JLLN040L4030016020000A@160VDCFast-Acting (F)PCB MountCheckOrder
JLLN040LS4030016020000A@160VDCFast-Acting (F)CheckOrder
JLLN040LSE4030016020000A@160VDCFast-Acting (F)CheckOrder
JLLN040P4030016020000A@160VDCFast-Acting (F)CheckOrder
JLLN040V4030016020000A@160VDCFast-Acting (F)CheckOrder
JLLN0454530016020000A@160VDCFast-Acting (F)Industrial CartridgeCheckOrder
JLLN045L4530016020000A@160VDCFast-Acting (F)PCB MountCheckOrder
JLLN045LS4530016020000A@160VDCFast-Acting (F)CheckOrder
JLLN045LSE4530016020000A@160VDCFast-Acting (F)CheckOrder
JLLN045P4530016020000A@160VDCFast-Acting (F)CheckOrder
JLLN045V4530016020000A@160VDCFast-Acting (F)CheckOrder
JLLN0505030016020000A@160VDCFast-Acting (F)Industrial CartridgeCheckOrder
JLLN050L5030016020000A@160VDCFast-Acting (F)PCB MountCheckOrder
JLLN050LS5030016020000A@160VDCFast-Acting (F)CheckOrder
JLLN050LSE5030016020000A@160VDCFast-Acting (F)CheckOrder
JLLN050P5030016020000A@160VDCFast-Acting (F)CheckOrder
JLLN050V5030016020000A@160VDCFast-Acting (F)CheckOrder
JLLN0606030016020000A@160VDCFast-Acting (F)Industrial CartridgeCheckOrder
JLLN060L6030016020000A@160VDCFast-Acting (F)PCB MountCheckOrder
JLLN060LS6030016020000A@160VDCFast-Acting (F)CheckOrder
JLLN060LSE6030016020000A@160VDCFast-Acting (F)CheckOrder
JLLN060P6030016020000A@160VDCFast-Acting (F)CheckOrder
JLLN060V60300125Fast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN07070300125200000A@300VACFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN070P7030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN08080300125200000A@300VACFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN080P8030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN09090300125200000A@300VACFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN090P9030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN100100300125200000A@300VACFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN100P10030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN11011030012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN110P11030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN12512530012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN125P12530012520000A@125VDCFast-Acting (F)CheckOrder
JLLN15015030012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN150P15030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN17517530012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN175P17530012520000A@125VDCFast-Acting (F)CheckOrder
JLLN20020030012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN200P20030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN22522530012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN225P22530012520000A@125VDCFast-Acting (F)CheckOrder
JLLN25025030012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN250P25030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN30030030012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN300P30030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN35035030012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN350P35030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN40040030012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN400P40030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN45045030012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN450P45030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN50050030012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN500P50030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN60060030012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN600P60030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN70070030012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN700P70030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN80080030012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN800P80030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN1000100030012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN1000P100030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN1100110030012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN1100P110030012520000A@125VDCFast-Acting (F)CheckOrder
JLLN1200120030012520000A@125VDCFast-Acting (F)Knife-Blade/Bolt-InCheckOrder
JLLN1200P120030012520000A@125VDCFast-Acting (F)CheckOrder

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