This is a resettable fuse, and it’s unlikely to have failed by itself. It’s likely that an MOV has failed, shoring power to the ground, and tripping the fuse.
If you have a multimeter, try measuring resistance across the fuse when it’s at an ambient temperature.
Also measure resistance across a part directly to the left of it (between the hole and the terminal), that’s an MOV which is likely been the part that actually failed.
Also mention what country you are at, if possible, I’ll try to provide a local resource.
Here is the topic (link), with relevant part links. Keep in mind that simply replacing the fuse may not solve your problem if issue lies elsewhere.
I discuss a way to troubleshoot your controller using canned air here (link), see if it helps pinpoint a cause of your issues.