Originally Posted by twistedtree
From what I can tell, an ANL fuse is an ANL fuse. This is why God invented standards. It appears that an ANL fuse by definition meets SAE J1171 which is the standard for Ignition protection. Just buy them from the stereo shop.
The only ANL's that meet ignition protection that I am aware of are made by Cooper
Bussman and sold by companies such as Blue Sea. You don't have to buy them from Blue Sea but you don't save that much buying
them elsewhere. If you have a source for an IP rated ANL other than the Cooper
Bussman fuse please let me know...
Earlier in the year I did some testing of cheap
automotive ANL's. The trip delay is horrible in comparison to the Cooper Bussman, this means they don't handle in-rush currents like the Cooper Bussman's do, and three out of ten of them failed unsafely and blew the windows out. I suspect that many of the "ANL's" you buy for short money
are really closer to an ANN fuse in trip delay. None of the inexpensive ANL's I've found carry an IP rating...
If you want to talk expensive buy some Class T fuses
I used the Copper Bussman / Blue Sea ANL's and will continue to do so after testing a pile of cheapos...