The Molex 430451211 is a 12-position, dual-row header from the Micro-Fit 3.0 43045 series. It's a board-to-wire interconnect — a shrouded male pin header that mates with the matching Micro-Fit 3.0 receptacle housing. Rated 8 A per circuit at 600 V, with a -40°C to 105°C operating range and a UL94 V-0 LCP housing. That 8 A per-contact rating is the real-world current limit per pin — it's not a total for the connector. For a 12-position header running all circuits, the total current budget is the sum of the per-contact limits, but the practical limit is set by the temperature rise across the whole assembly.
This header is specified for automotive, general-purpose industrial, medical equipment, and telecom applications — basically any board-to-wire power or signal interconnect that needs a locked, shrouded connection in a moderate-temperature environment.