Good relay,

Unfortunately with misleading labeling. Normally, auxiliary contacts are always two (atomic number, contact type). Only main contacts are single digits, but as there is no contactor is ... there is no main contacts.

If in the event the contact execution have been labeled, these are exactly the wrong way round. 1 + 2 openers, 3 + 4 are normally open. Here is 1 + 2 and 3 + 4 a make an opener.
As ordinals go through not because they are the same for each contact.