
MOLEX Mini-Fit Jr. 3-way receptacle housing with First Mate Last Break sequencing for safe hot-plug power circuit connections.
The MOLEX Mini-Fit Jr. Receptacle Housing is a specialised electrical connector designed for high-reliability applications. This single-row, 3-way housing features the critical First Mate Last Break (FMLB) sequence. This advanced design ensures that specific pins—such as ground or key pins—make contact before any power or signal pins during mating, and break contact last upon disconnection. This sequenced mating is essential for hot-plug power circuits, where connections must be made or broken while the system is live, preventing arcing, damage to sensitive components, and ensuring operator safety.
Crafted to accommodate Mini-Fit Jr. terminals, this housing provides a secure and durable interface in a compact form factor. Its robust construction ensures a stable connection resistant to vibration and environmental stress, making it suitable for demanding industrial and electronic environments. The clear housing design aids in visual inspection during assembly and installation.
This connector is a fundamental component for engineers designing systems that require safe, sequenced power connections, offering both reliability and peace of mind in critical circuit designs.

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