The latch lock snaps the housing into the panel cutout and keeps the mating plug from backing out under vibration. One critical sourcing detail: contacts are not included. This housing ships empty and requires a separate order of the matching Power Triple Lock crimp tab terminals.
Mating Plug and System Compatibility
This receptacle mates with the Power Triple Lock plug housing that carries the female socket contacts. The system is keyed to prevent mis-mating, and the 6.00 mm pitch is consistent across the series — so a 6-circuit plug mates only with a 6-circuit receptacle. If you're building a harness, the plug side (e.g., the 1-1644055-3 at 6.35 mm pitch) is a different system and not a direct mate — stick to Power Triple Lock components for guaranteed fit.