Fusible link?

I cut mine out and replaced it with a 30 amp self resetting circuit breaker.
The breaker acts a bit like the fusible link as in it doesn't trip immediately but will if things get hard shorted.
It will also trip if there is enough of a short that could burn wires, but then it automatically resets itself.
This gives you a fair warning to disconnect the battery and find out what is going on, but it has never tripped (even when the battery was a little low) because like I said, it can handle higher loads than 30 amps for a short time.

If for example all your power goes off, comes back on in 5 seconds and goes back off again you have a short capable of burning 12 ga wires and you can disconnect the battery and find out where the problem is.
If you reconnect the battery and have not solved the problem, then it'll just trip again.

The people who insist on replacing it with a new fusable link are just stuck with what it is and does, as well as with all the mystery and replacement issue's.
What happens if it burns up far from help somewhere?