Littelfuse Electronics Circuit Protection Resources

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Fuse Selection Guide

Use this quick reference chart, along with the Littelfuse fuseology guide, to determine the correct overcurrent protection for any application.

This tool should ONLY be used as a quick reference guide to suggest a starting point in the overcurrent selection process.

Key parameters a designer needs to know before using the fuse selection guide:

  • Max Voltage
  • Rated Current
  • Interrupting Rating
  • Mounting Type
  • Footprint
  • Fast Acting or Time Lag
  • Safety Certifications