How to convert an 8538SFA21 non-fusible size 4 combo starter to fusible?

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Issue:
Can you add a fuse block on a non-fusible 8538SFA21 size 4 combo starter to convert to fusible?

Product Line:
NEMA Contactors and Starters

Environment:
8538 NEMA Combination Starters

Resolution:
You cannot add a fuse block on the combo starter. You have to swap out the complete switch as the fuse block is integral of the switch.

Complete disconnect switch part number is 3105536650.