What is a fusible link and how does it work?
What is a fusible link and how does it work?
A mechanical fusible link is a device consisting of two strips of metal soldered together with a fusible alloy that is designed to melt at a specific temperature, thus allowing the two pieces to separate.
What is the purpose of installing a fuse circuit breaker or fusible link?
Fusible Links It acts as a high-current fuse, typically with a capacity of 30 amps or more, that protects circuits from excessive current draw. When current flow in the circuit exceeds that of the fusible link, the wire melts and interrupts the circuit.
What is the purpose of a fusible link?
(Image/CorvetteForum.com) Fusible links—also spelled fuseable and fusable—serve a similar purpose to a fuse. (You can read more about fuses here .) Just like a fuse, the link is designed to handle a lower current (amp) load than the rest of the system so, in the event of a short or overload, the link will be the first failure point.
Why are fusible links used in starter motors?
So while extremely high current in a regular wire may cause a fire, a blown fusible link is less likely to do so. Fusible links can be found in a variety of places in cars and truck, but they are commonly used in high-amperage applications like starter motors, which can draw hundreds of amps.
How many AMPS is a 20 gauge fusible link?
How many amps is a 20 gauge fusible link? Circuit Hypalon Link Type MAXI Fuse Rating Ignition Feed (J10) 18 gauge (grey) 50 amp Ignition Feed (J1) 20 gauge (orange) 40 amp ECU/ASD Feed (J1) 22 gauge (white) 30 amp Direct Battery Feed (L1) 18 gauge (grey) 50 amp
Which is easier to install, fuse block or fusible link?
But certain automotive components require momentary higher peak current levels depending, so a fixed-rating fuse may not be ideal. Fusible links are also cheaper and easier to install than a dedicated fuse block, which is why you see them in OE applications.
(Image/CorvetteForum.com) Fusible links—also spelled fuseable and fusable—serve a similar purpose to a fuse. (You can read more about fuses here .) Just like a fuse, the link is designed to handle a lower current (amp) load than the rest of the system so, in the event of a short or overload, the link will be the first failure point.
How is a wire measured in a fusible link?
Wire is measured in “gauge,” often abbreviated AWG for “American Wire Gauge.” The lower the number, the bigger the wire. Bigger wires handle more current (amp) draw. Check out this cable calculator chart to learn more. Again, a fusible link’s function is very similar to a fuse. It’s designed to fail before your wiring harness melts to goo.
But certain automotive components require momentary higher peak current levels depending, so a fixed-rating fuse may not be ideal. Fusible links are also cheaper and easier to install than a dedicated fuse block, which is why you see them in OE applications.
How long does it take to replace a fusible link?
When it fails, it will break the continuity in the rest of the circuit, preventing damage to other components down the line. A fusible link typically costs a couple of bucks and can be replaced in 30 minutes. A starter motor or ECU? Not so much. But fusible links look much different than fuses and are used for different applications.
