Class CC fuses are current limiting fuses with rejection tips on the bottoms to prevent them from being used in holders not rated similarly.

A Current-Limiting Fuse meets the following three conditions:

1. Interrupts all available overcurrents within its interrupt rating.


2. Within its current limiting range, limits the clearing time at rated voltage to an interval equal to, or less than, the first major or symmetrical current loop duration.


3. Limits peak let-through current to a value less than the available peak current.