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Littelfuse MXM MEGA® MIDI® Fuse Holders

Littelfuse MXM MEGA® MIDI® Fuse Holders offer a high-current solution rated up to 120V/650A, with sliding tabs and interlocking pins for easy fuse array configuration. These fuse holders support MEGA and MIDI bolt-down fuses with M6 and M8 threaded studs, and include a UL 94V-0-rated protective cover. Littelfuse MXM MEGA MIDI Fuse Holders feature a glass-filled thermoplastic body that withstands harsh environments, while poka-yoke features prevent fuse mismatch. Applications include mild hybrid vehicles, heavy-duty and medium-duty trucks, material handling equipment, electric powersports, agricultural machinery, golf carts, and electric lawn and garden tools.

Features

  • Compatible with MEGA and MIDI bolt-down fuses (sold separately) rated up to 650A (MEGA) and 200A (MIDI)
  • Patented sliding-tab design accommodates different pitches, allowing mixing and matching of different fuse ratings in arrays
  • Interlocking pins on sides of fuse holder connect additional MXM fuse holders to create multi-fuse array configuration
  • M6 and M8 threaded studs and nuts enable simple fuse installation
  • Glass-filled thermoplastic body withstands harsh conditions under the hood
  • Base style includes mounting tabs and M6 holes for exterior mounting
  • Included UL 94V-0-rated protective cover snaps into the fuse holder base and can be used with M6 and M8 versions

Applications

  • Mild hybrid vehicles
  • Heavy-duty/medium-duty trucks
  • Material handling equipment
  • Electric powersports vehicles
  • Small construction and agricultural equipment
  • Golf carts and low-speed vehicles
  • Electric lawn and garden equipment

Specifications

  • ISO16750-3 (2012) agency approval shock
  • ISO16750-3 (2012) agency approval vibration
  • 490A current rating continuous 
  • 650A current rating maximum
  • Fuse type:
    • M6 only: MIDI 498, MIDI BF1, MIDI BF1 58V, and MIDI 70V
    • M8 only: MEGA 298 LT, MEGA BF2, and MEGA BF2 58V
    • M6 and M8: MEGA 298, MEGA 120V, MEGA 60V high-breaking capacity, MEGA 70V SF51, and MEGA plus 32V (67)
  • M6 and M8 hardware
  • ISO 16750-4 (2010) humidity
  • UL 94V-0 ignition protection
  • Bolt-down mounting method
  • Recommended torque:
    • Mounting features: M6 stud 10±1N-m
    • Input/output stud torque: Check fuse datasheet
    • Maximum torque (without fuse):
      • M6: 9+/- 1N-m
      • M8: 20+/- 1N-m
  • -40°C to +105°C temperature range
  • 32V to 120V continuous voltage rating 
  • 120V maximum voltage rating
  • Up to 95mm2 wire size

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Published: 2025-10-13 | Updated: 2025-12-10