Hmmmmmm, I have never needed to vary this setting, but, I think the issues could be:-
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Killing the item that caused the short - But it's already faulty so why worry.
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Stressing the semiconductors in???? 1/ the block detection circuit;??? 2/ the output circuit of the 5033;???? 3/ the power supply.
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The energy from the fault goes somewhere, and you'll get away with it a few times, but longer fault times mean more hidden damage, and eventually something will fail.
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I think you should fix the fault, not the protection.
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All the above IMHO of course........ Other opinions are available....
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Pete S. - New Zealand