Receptacle Housing for the Economy Power 2.5 Line
The housing accepts TE's standard Economy Power 2.5 crimp pins; the exact terminal part number depends on the wire gauge you are terminating. The housing itself is a PA nylon shell that provides the cavity alignment and the locking ramp; the electrical path is entirely through the separately ordered contact.
The 1969588-3 receptacle mates with the corresponding Economy Power 2.5 header — a shrouded or unshrouded pin header with the same 2.50mm pitch and 3 positions.