Ok I cut the fuse out with some nippers.
The ends of the fuse appear to have additional end caps over the metal ends.
I can make out it's a 20 amp 250V fuse.
Other markings are obscured by the end caps I can make out what appears to be "ABE"
Below that there's a "CQ"
Then end caps show CONO or CONQ Fuse which must be the manufacture.
Searching 20A ABE fuse turned up a fast acting fuse.
So as far as I can tell it's a ceramic 20 Amp ABE fast acting fuse.
However I don't know if I want to try testing with an automotive spade fuse as there can be significant differences between fuse types and their ratings.
I found this pdf file that shows different sizes of ABE fuses with some specifications.
http://www.conquer.com.tw/product/new/ABE-ABP.pdf
and another 20 amp ABE fuse
http://www.mantech.co.za/ProductInfo.aspx?Item=14M3232
It appears fuse length is 1.25 inch or 32 mm, the one installed has metal caps with pigtails making it 33-34mm total length.
UPDATE:
This fuse 20 Amp .25 x 1.25 inch 250V with pigtails (through hole mounting) are sort of diffcult to find. Without the pigtails it's more common and easier to find.
I found six through hole ABC fuses on Digi-Key that meet the same criteria as the ABE which appear to be the same fuse.
FUSE CERM 20A 250VAC 125VDC 3AB
314, 324 Series
https://www.digikey.com/scripts/DkSearch/dksus.dll?Detail&itemSeq=260640798&uq=636617911170968235
I'm uncertain if there's actually any differences between them other than their part numbers.
283-3760-ND
F1871-ND
F3331-ND
F1871-ND
83-3853-ND
BK/MDA-V-20-R
