How Could I Implement a Fusable Safety Switch
Unless this switch can be reset under certain conditions then you are effectively creating a fuse that cannot be replaced. A remote button blows an inline fuse that possibly cannot be replaced. Use the button to create an overload that pops the fuse. There is no resetting this. There is no switch.

It could work by placing a relay of the proper voltage across the fuse to be blown. If it does blow then the relay gets power to switch to another circuit. You are still talking about a constructed circuit and not this '3-way fuse' idea.