Two positions in a single row keep the connector narrow, suiting it for low-circuit-count power or signal taps on a board edge.
Tin plating and latch lock: field-service reality
Where it fits: board-to-cable, general purpose
Style is Board to Cable/Wire, meaning the header mounts on the PCB and mates with a crimp-socket housing (the MR series receptacle). General-purpose application class covers industrial controls, appliances, and low-power distribution inside an enclosure where UL94 V-0 is required.