Schneider DOL motor starter switch query

Hi. Ive wired single phase 240v motor starter switches before but am confused by this one....



Where the earth binding posts usually are on the side of the switch box, this one has one earth binding post and one neutral. I have no idea why the neutral one is there?! Ive never seen this before... normally its just two earthing posts: one for supply and one for motor.



Can I just wire the stater normally (ie two lives, in from supply and out to motor; earths from supply and motor both to the single earth binding post, and an overload jumper between T3 and L3) and ignore this N binding post completely?



Many thanks

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