Molex Micro-Fit TPA Female Connector Housing 3 mm Pitch, 4 Way, 1 Row, Nylon 171850-0400

The Molex 171850-0400 Micro-Fit TPA Female Connector Housing is a precision-engineered cable mounting connector designed for dependable electrical connections in critical industrial, computing, telecommunications, and automotive applications. This housing features Terminal Position Assurance (TPA) with an integrated secondary lock, effectively preventing terminal back-outs caused by assembly errors. The single-row configuration employs a one-piece housing incorporating TPA, removing the need for separate secondary pieces and greatly reducing component loss risk.

With a 3 mm pitch and 4 contact ways in a single row, the connector suits space-constrained designs and assures compatibility with Micro-Fit 3.0 series headers and plugs. The housing is fully polarized, protecting against mismating, and includes a robust locking latch to secure each connection. Contacts are completely isolated within the nylon housing, preventing accidental arcing and increasing operational safety. Designed for cable mounting, this housing is fit for use with 46235 Micro-Fit RMF Reduced Mating Force and 43030 Micro-Fit Female Crimp Terminal.

Constructed from high-grade nylon, the connector housing delivers excellent mechanical durability and superior electrical insulation. At 15.74 mm in length and 14 mm in width, it is optimized for compact installations and panel mounting. The orientation is straight, making it suitable for cable-to-cable or cable-to-board interface implementations.

This female connector housing is widely utilized in consumer electronics, desktop computers, workstations, power supplies, data centers, home appliances, telecommunications infrastructure (including routers and switches), and automotive/commercial vehicle harnesses for non-sealed, internal device connections. It supports systems demanding reliable, secure mating, and is particularly suited to manufacturing, industrial automation, and laboratory setups.

TPA design with integrated secondary lock ensures terminals remain firmly in place. Polarized housing and locking latch offer enhanced mating reliability and error prevention. One-piece housing simplifies assembly and minimizes parts loss in single-row versions.

Contacts isolated in nylon housing reduce risk of electrical faults and arcing. Complies with Molex Micro-Fit 3.0 system standards for broad compatibility. Designed for cable mounting and compatible with designated crimp terminals.

Ideal for industrial, computing, telecom, automotive, and commercial applications. Discover more Molex connector housings in the PCB Connector Housing category and explore advanced termination systems for industrial and electronics projects.