Littelfuse

Littelfuse JLLN1200 Class T Fuse – 1200A – 300V Fast-Acting Current-Limiting Fuse

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SKU: JLLN1200 GTIN/UPC: 07945818106
$413.00
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The Littelfuse JLLN1200 is a 1200 Amp Class T fast-acting fuse designed for high-performance protection in industrial and commercial electrical distribution systems. Part of the JLLN series, this current-limiting fuse provides rapid response to fault conditions, minimizing damage caused by short circuits and high fault currents. Its compact knife-blade/bolt-in construction allows efficient installation in space-constrained applications requiring high interrupting capacity and superior protection.

Electrical Rating

  • Current Rating: 1200 Amps
  • Maximum AC Voltage: 300 VAC
  • Maximum DC Voltage: 125 VDC
  • Interrupting Rating:
    • 200 kA AC
    • 20 kA DC @ 125 VDC

Key Specifications

  • Manufacturer: Littelfuse
  • Catalog Number: JLLN1200
  • Series: JLLN
  • Fuse Class: Class T
  • Construction Type: Knife-Blade / Bolt-In
  • Fuse Type: Fast-Acting Current-Limiting
  • Indicating: No

Protection Characteristics

  • Fast-acting operation for rapid fault clearing
  • Current-limiting design reduces let-through energy during fault conditions
  • Provides superior short-circuit protection
  • High interrupting capacity for demanding power distribution applications
  • Helps protect sensitive electrical and electronic equipment from fault damage

Construction Features

  • Compact Class T fuse design
  • Knife-blade/bolt-in terminal construction
  • Non-indicating fuse configuration
  • Rugged industrial-duty construction for reliable performance

Mounting & Compatibility

  • Mounting Method: Fuse Block / Holder / Bolt-In Mounting
  • Compatible with Class T fuse blocks and fuse holders
  • Suitable for switchboards, panelboards, UPS systems, battery systems, and industrial distribution equipment

Applications

  • Industrial power distribution systems
  • UPS and battery backup installations
  • Switchboards and panelboards
  • Motor control centers
  • Current-limiting feeder and branch circuit protection
  • Protection of sensitive electrical and electronic equipment

Product Data

  • Manufacturer: Littelfuse
  • Catalog Number: JLLN1200
  • Product Type: Fast-Acting Current-Limiting Fuse
  • Series: JLLN
  • Fuse Class: Class T
  • Type Fuses
  • Vendor Littelfuse
  • Brand Littelfuse

Returns are easy

You may return items within 30 days of delivery for a refund.

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My Circuit Breakers provides a comprehensive 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer). Extended warranties are available upon request.