3.96mm pitch, 2 loaded positions, locking ramp
The 179844-2 is a 3-position vertical header from the TE Power Double Lock series, with only 2 positions loaded — the third cavity is empty, likely for keying or selective population. Pitch is 0.156" (3.96mm), a common spacing for moderate-current wire-to-board power distribution. The 4-wall shrouding and locking ramp keep the mating receptacle secure under vibration and prevent accidental unmating in field-service or industrial cabinet applications.
Board-to-cable power interconnect
The tin-plated tab contacts are rated for moderate current, though the exact ampacity depends on wire gauge and ambient temperature.