The TE Connectivity 1-1971773-3 is a 3-position plug housing from the Power Triple Lock series, built for inline wire-to-wire or wire-to-board power interconnects. The housing accepts female blade socket terminals, crimped onto the wire, then inserted into the cavity until the latch holder locks them in place.
Contacts Not Included — Order Separately
This is a housing only — no contacts are included. You need to order the matching female blade socket terminals separately for the Power Triple Lock series. The crimp terminals are inserted into the housing cavities; the latch holder then locks them against back-out. Without the correct terminal, the housing is just a shell.
Locking and Environmental Rating
The latch holder fastening provides positive retention — you hear the latch click when the plug mates with the header, which matters in a harness that sees vibration. The glass-filled PBT housing handles -55°C to 105°C, so it's at home in an engine bay or an industrial cabinet. Natural colour means no colour-coding for keying; rely on the cavity position and the latch orientation.