The Molex 430451215 is a 12-position dual-row surface-mount header from the Micro-Fit 3.0 43045 series, built for board-to-wire power interconnects.
The 8 A per contact at 600 V is the headline power spec — this is a power interconnect, not a signal header.
Mating and Termination Reality
The locking ramp engages audibly, and the 4-wall shroud protects the pins from being bent during blind mating. The board lock is the feature that saves your reflow yield — without it, the part can float on the paste and misalign.