E Rated Bolt In Style

Amp-trap Bolt-in Series E-rated fuses are single, double or triple barrel (3 diam.) with end mounts designed for bolting directly to equipment bus or terminal pads. They are UL listed and are for use indoors (or outdoors in a weatherproof enclosure). The unique time-current characteristic of Ferraz Shawmut E-rated fuses allows them to be closely sized to transformer full load rated current, as recommended by IEEE guidelines, without being affected by normal magnetizing inrush current. Bolt-in fuses are typically sized at transformer rated current of 133%, thereby providing superior overall protection.


  • UL Listed for compatibility with UL listed equipment
  • Bolt-in mounting for direct connection to bus or terminals
  • Current Limiting for superior equipment protection
  • Blown fuse indicator gives positive identification of open fuse
  • Non venting for silent operation
  • Metal embossed Catalog Number and manufacturing date for lasting identification


  • Protection for 5.5kV transformers or distribution systems.


  • Eaton Cutler Hammer Westinghouse
  • Ferraz Shawmut
  • General Electric

Data Sheets:

  • Data Sheet 11: Bolt-in Style "E" Rated Fuses
  • Data Sheet 12: Bolt-in Style "E" Rated Fuses 3 & 4 Barrel