I don't think NFPA70E (and therefore OSHA) recognizes the term finger safe for 480V work. Table 130.2(C) says the restricted approach boundry for 480V is 1". Anything closer is considered making contact with the live part.
So finger safe terminals would help for the 50-300V "avoid contact" boundary but they would need to have a 1" recess for 480V.
NFPA79 220.127.116.11 address the dimensions and (proper) use of the "test" finger.
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