You may be able to cool it off a bit if you remove the fuse, spray electro-contact cleaner into the fuse terminal cavities then replace the fuse with a new one, Some heat on big amp circuits is normal and is caused by wiring running at close to max capacity. If you are able you could remove the fuse block and look underneath for corrosion. I hope this helps, take care.
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You may be able to cool it off a bit if you remove the fuse, spray electro-contact cleaner into the fuse terminal cavities then replace the fuse with a new one, Some heat on big amp circuits is normal and is caused by wiring running at close to max capacity. If you are able you could remove the fuse block and look underneath for corrosion. I hope this helps, take care.