The board lock is a practical feature: it keeps the header seated during wave solder and adds mechanical retention against cable pull-out.
This header is used as a wire-to-board power interconnect in harness assemblies. Typical applications include power distribution within enclosures, server PSU internal wiring, battery interconnect, and industrial control panels. The locking ramp and board lock suit it for environments with moderate vibration — think equipment inside an enclosure, not an engine compartment. The -40°C to 75°C operating range covers most indoor and cabinet applications.