ANN & ANL are one in the same foot print. The ANN is just a faster blowing version than an ANL. I assumed that the builder used ANL's for a motor load and ANN was a typo. Use a 150 ANL, or larger, and your problems will very likely go away and NO RE-WIRING.. Your 4/0 wire can handle 445A outside of an engine space so you can go much larger on the fuse and still be well protected and well under 100% of the ampacity rating.. A fast blow ANN never should have been used on a motor load like a winch. The Blue Sea ANL's are about $14.00 each and easily available.....

They are the identical foot print but an ANL is a slower blowing version.(nl)