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Manufacturer Littlefuse
Mfg Catalog # JLLN225
North Coast Part # 1685134



  • 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.

Longer Equipment Life

  • Current limiting design greatly reduces damage to equipment caused by heating and magnetic effects of short circuit currents.

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.


  • 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.


  • 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.


  • Ampere Rating (A): 225
  • VAC (V): 300
  • VDC (V): 125
  • Interrupting Rating: 20000A@125VDC
  • Opening: Fast-Acting (F)
  • Package Size: Knife-Blade/Bolt-In


UPC 07945818089
GTiN 00079458180893
Voltage 125 Volt
Type Class T
Applications Variable Speed Drives
Family Brand Name Littelfuse
Amperage 225 Amp
Sub Brand POWR-GARD JLLN Series
CA Prop65 Warning WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer.

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