Yeh, don't see a need for that either.
Not sure deciphering there data sheet... I think this one functions as an 'A/B' with no center position. For some reason they downgrade it to 8A for DC? They make this with just about any configuration. With or without center. Any position NC or NO, Momentary or not... I would call them and be sure I got the right one
AC current goes to zero every 20 milliseconds or so, putting out the arc. DC doesn't do that. The gap in open position isn't all that long, which means the arc lives for quite some time, eating away at the contacts, killing life expectancy.
