What This 3-Position Power Double Lock Housing Is
The 3.96mm pitch gives enough spacing for 18-22 AWG power wiring without forcing an oversized harness cross-section.
What the 3.96mm Pitch and Latch Lock Mean for the Harness
For a 3-circuit power run, this latch is the difference between a connection that stays mated under machine vibration and one that walks loose over time.
The mating half for this plug is the Power Double Lock header with a 3.96mm pitch and latch lock feature — look for TE headers in the 1-178288 or 1-178289 series for through-hole or surface-mount board mounting. The wire gauge range for the crimp terminals is typically 18-22 AWG for the standard power contacts, though the exact gauge depends on the terminal variant selected.