It's a free-hanging (in-line) shell that accepts male pin contacts via crimp termination — the contacts are sold separately, so the BOM needs a line item for the matching terminals. The 5.60mm row spacing gives the contacts enough room for the current these housings typically carry, though the exact ampacity depends on the terminal and wire gauge you pair it with.
The 2-row, 12-position layout means the plug will have the same cavity count and row spacing. For the contacts, you need the male pin crimp terminals specified for the EconoSeal J Mark II 070 series; the housing itself is just the shell, so the terminals are ordered separately. The crimp termination lets you use a standard hand tool or semi-automatic press for the wire preparation, and the free-hanging design means no board footprint to worry about — just strip, crimp, insert, and lock.
The 1-2333134-5 is another EconoSeal J Mark II 070 receptacle, but it's a 30-position, 2-row housing with a 2.00mm pitch and 3.30mm row spacing — a much denser package. The 174663-2's 5.60mm row spacing gives each contact more physical separation, which translates to better creepage and clearance for higher-voltage applications within the series. If your harness needs 12 circuits and the board or device interface expects the wider row spacing, the 174663-2 is the fit; the 30-position sibling is for higher-density bundles where space is tighter.