The 1-1376388-2: It is a free-hanging (in-line) connector intended for wire-to-wire or wire-to-board power harnesses where a positive latch lock keeps the pair mated under vibration. The housing is glass-filled nylon 6/6 (PA66) rated from -30°C to 105°C — wide enough for outdoor cabinet or under-hood duty. Contacts are not included; this is the shell only, ordered when you already have the matching crimp terminals on hand.
What contacts fit this housing?
Contacts are not included with this housing. The 1-1376388-2 accepts female socket crimp terminals — the exact TE part number for the contact is not listed in the basic spec, but the Power Key series uses standard crimp sockets that mate with the corresponding male pin header. Order the terminals separately based on your wire gauge; the housing itself does not specify a wire range, so confirm the terminal's AWG compatibility before committing the BOM line.
What is the mating receptacle?
This plug housing mates with the matching Power Key receptacle header — the male pin header that carries the same 5.00 mm pitch and latch lock feature. The receptacle is the board-mount or in-line half that accepts the female socket terminals housed in this plug. No specific mating part number is listed in the basic spec, but the series is consistent: a 2-position Power Key header with the same pitch and latch lock will mate directly.