Victron ANL Fuse holder:
The largest fuse holder in the range, Victron ANL fuses are ideal for high power systems and other large gauge cables requiring high current protection.
The thick ABS case has two mounting holes in the middle of the holder with M8 galvanised steel bolts with spring lock, plain washers and hex nuts.
Data sheet:
https://www.victronenergy.com.au/upload/documents/Datasheet-Midi,-Mega-and-ANL-fuses,-and-fuse-holders-EN.pdf
