Fusible Link: Description and Operation

Fusible Link
The fusible link is primarily used to protect circuits where high amounts of current flow and where it would not be practical to use a fuse. For example, the starter circuit. When a current overload occurs, the fusible link melts open and interrupts the flow of current so as to prevent the rest of the wiring harness from burning.
Determine the cause of the overload before replacing the fusible link. the replacement fusible link must have the same amperage specification as the original fusible link. Never replace a blown fusible link with fusible link of a different amperage specification. Doing so can result in an electrical fire or other serious circuit damage.




A blown fusible link is easily identified as shown.




Fusible Link Specification