Correct comments made. Carefully choose the fasteners so they can secure the baseplate without damaging it. Two #6 self-tapping screws off-center to the outside secure it. I would also drill a 7/64 pilot hole for self tapping screws. BIG CAUTION: While the oversized spade terminals provided provide very adequate contact for the current loads that can be used with these breakers; Be careful, DO NOT PLACE THEM DIRECTLY OPPOSITE (as shown in the bottom left image of the listing) as continued internal torque may eventually bring them into contact. This "bridge" completely bypasses the fuse.
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