ALT 100A Fuse won't come out

I need to remove and replace the ALT 100A fuse located in the fuse box in the engine compartment.
It looks like it should just pull out but it doesn't.
 
There are plastic clips holding the sub-assembly in that the fuse plugs into but I don't want to break them by not using the correct technique or tool.
 
Any suggestions?
 
Thanks.
 
 

Have no first hand experience so check things out before proceeding.  Info is for a 1999 Camry.

The alt fuse should be bolted to each wire at its two electrical connectors.  There should be a smaller box containing this fuse that is held in place by tabs.  Use a screw driver to release the tabs, once released you should be able to remove the smaller box (pull out) and allow access to the bolted fuse connectors.