0898400.U-1M6 - MEGA® High Performance 70V SF56 Series

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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

This 400 A MEGA® 70V High Performance SF51 automotive fuse offers protection against short circuits. Ideal for protecting batteries, alternators, and heavy gauge wire harnesses, it employs diffusion pill technology to deliver predictable time-delayed performance.


  • Purple bar indicates 400 A rating
  • Tin-plated copper alloy terminals
  • >1 MΩ open state resistance
  • Complies with ISO 20934 – Type SF56


  • 56 mm pitch prevents mistaken replacement with other types of high-current fuses
  • High-contrast, color-coded 400 A aids identification
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