What This Keying Star Does
The TE Connectivity 282969-1 is a red keying star from the Buchanan series, designed to polarize and prevent mismating of Termi-Block plug connectors. It inserts into the plug housing to occupy a keyway position, ensuring that only a receptacle with the matching keying profile can mate — a mechanical safeguard against wiring errors in multi-position terminal block assemblies.
This keying star is specified for use with Termi-Block plugs. It is not a universal fit for all TE Buchanan terminal blocks — it mates only with plug housings that accept the star-shaped keying insert. The red color identifies the keying position or code, allowing visual confirmation before assembly.