The 292253-4: The 0.079" (2.00 mm) pitch sets the board footprint for this 4-position header. At 2.00 mm, the trace escape between pads is tight enough for signal routing on a two-layer board but leaves room for a via-in-pad if needed. The 0.126" (3.20 mm) post length is standard for 1.6 mm thick boards; confirm your board thickness against the solder tail length.
This header mates with TE CT series crimp-type receptacles (e.g., 179228-2 or similar 4-position housings). Tin-on-tin contact finish is cost-effective for applications with fewer than 25 mating cycles. If the connector sees frequent disconnect in a corrosive environment, consider the gold-plated version in the same series.
Current and voltage limits
Voltage rating is 125 VAC, suitable for signal-level and low-power distribution inside an enclosure.