Surge or other suppressor I can use, to prevent tool blowing fuse if blade sticks
What you are looking for is called an "electronic circuit breaker". Since it sounds like you're not qualified to design such a thing from scratch, it would probably be best to look for commercial products under that designation.

The key issue for you is that you need something that will allow the normal start-up surge of the saw, but trip on anything that exceeds that, such as getting the blade stuck. There might be a standard magenetic/thermal breaker that would work for you, but an all-electronic one would be adjustable to match the exact characteristics of your tool.

Even if the rate of "nuisance" trips remains about the same, it at least eliminates the need to continually buy one-time fuses.