174670-1 – TYCO ELECTRONICS

The TYCO 174670-1 is a keying plug designed for use with miniature Universal Mate-N-Lok (Mini-UMNL) connector housings. This single-position plug, constructed of a UL 94V-0 rated thermoplastic, is inserted into specific cavity locations within the connector housing to prevent mismating with incompatible connectors. The plug’s geometry is precisely molded to ensure a secure and irreversible fit within the designated cavity, providing a physical keying mechanism. It effectively blocks the insertion of a connector that lacks the corresponding keying configuration, thereby safeguarding against incorrect wiring and potential system damage. The 174670-1 is typically used in applications where multiple similar connectors are present and misconnection could lead to operational failure or safety hazards. It is a passive component requiring no electrical connection.