Littelfuse JLLN Series Fast Acting Fuses

Littelfuse JLLN Series Fast Acting Fuses feature POWR-GARD technology with UL class T standard ensuring quality overcurrent protection. These fast-acting fuses are the most compact devices available in ratings above 30A, less than one-third the size of comparable Class R fuses. The JLLN series fuses can prevent the opening of expensive semiconductor fuses that protect individual components when used as input or output fuses for surge-sensitive components. These JLLN class T fuses come with a melamine body with either bronze (1A to 30A) or copper (35A to 1200A) caps and offer a voltage rating of 300V AC. Littelfuse JLLN series fast-acting fuses are used in, power conversion devices, switch enclosures, fuse pullouts, and motor or general-purpose circuits where space is not critical.

Features

  • Compact size
  • CSA certified
  • Ensures quality overcurrent protection with POWR-GARD technology
  • Provides fast short-circuit response for equipment requiring fast overload protection
  • Reduces damage caused by heating and magnetic effects of short-circuit currents; extends the equipment’s lifecycle
  • RoHS compliant
  • Safety feature providing reliable interruption of all overcurrent up to 200,000A

Applications

  • Compact main switches
  • Individual electric services and meters
  • Power conversion devices
  • Power supplies and power distribution units
  • Variable speed drives

Technical Specifications

Parameters Values
Ampere range  1A to 1200A
Interrupting rating AC: 200kA rms, symmetrical
DC: 50kA (1A to 30A); 20kA (35A to 1200A)
Voltage rating AC: 300V
DC: 50kA (1A to 30A); 20kA (35A to1200A)
Material 1A to 30A: melamine body, bronze caps
35A to 1200A: melamine body, copper caps