MX150 Hybrid Plug Housing, 10 Circuits, Key A
The Molex MX150 1600775010 is a 10-position plug housing from the MX150 160077 series, designed for hybrid power and signal harnesses in automotive and industrial environments. It carries a 0.138" (3.50mm) pitch across two rows, with the position count split as 6 signal cavities and 4 power cavities — a layout that matches the growing need to bundle control and main supply lines through a single connector body. Key A keying is molded into the housing profile, preventing cross-mating with the Key B variant (1600775011).
Locking Ramp and Field-Termination
This is the primary retention mechanism for vibration-prone installations like off-road equipment, marine, and powertrain harnesses. The housing accepts crimp terminals (blade pin contacts, sold separately), terminated in the field with standard MX150 crimp tooling. Free-hanging (in-line) mounting means it wires into a harness bundle without a panel cutout; the locking ramp takes the strain off the individual crimp joints.
Key A vs Key B — Why It Matters
The 1600775010 is Key A (black housing); the sibling 1600775011 is Key B (natural/grey). The keying is a physical polarisation rib in the housing shroud — a Key A plug will not enter a Key B receptacle, and vice versa. This is not a cosmetic difference: if your harness layout calls for two MX150 connectors in the same zone, specifying one Key A and one Key B prevents a field mis-mate that could short a power circuit into a signal line. Both carry the same 10 (6+4) position layout, pitch, and temperature rating; the choice is purely about harness routing and safety isolation.