The closed-end housing keeps the back of the connector sealed — no exposed contacts or cable stubs — which simplifies routing in tight enclosures and avoids accidental shorts during assembly or service.
Termination and Wire Prep
This is an IDC (insulation displacement) termination — you press the 24 AWG ribbon or discrete wire into the slot, and the contact blades pierce the insulation to make the connection. No stripping, no crimping, no special tooling beyond a simple press.
The pitch, position count, and IDC termination match the SL 70400 series; confirm the mating header part number and your BOM position count before committing.