The closed-end feature means the housing has a solid back wall, so the cable stops at a defined depth and the conductors are fully captured. No stripping or crimping; the termination is a single press operation, which keeps assembly consistent across a harness build.
Cross-Shop Comparison
The 1-1703095-1 is a 4-position IDC receptacle with a latch lock, but it uses a 0.197" (5.00 mm) pitch and accepts discrete wire, not ribbon cable. The 103946-3 stays at 0.100" pitch for ribbon — if your harness uses discrete wires and needs a locking feature, the 1-1703095-1 is the alternative; if you are terminating ribbon cable at standard spacing, this plug is the direct fit.