MX150 Sealed Receptacle Housing, 12 Circuits, 3.50mm Pitch
The Molex 1601126031 is a 12-circuit receptacle housing from the MX150 160112 series, a sealed wire-to-wire interconnect family designed for underhood and outdoor harness applications.
Sealed Construction and Mating Half
The housing is marked as sealed, which in the MX150 series means the connector achieves an IP67 rating when mated with the correct plug and the wire-seal caps are installed on the individual cavities. The seal integrity depends on the gasket at the mating interface and the wire seals on each terminal — if the connector is unmated, the open half is not protected, so cap the unused side in washdown environments. The locking ramp provides the axial force to compress the interface seal; without a fully latched mate, the IP rating is not valid. The mating plug is the male pin housing from the same MX150 160112 series — the 12-circuit version uses the same 3.50mm pitch and dual-row layout.
The crimp termination is field-serviceable with the correct Molex hand tool or automatic press; the terminal locks into the housing cavity with a positive retention tang. Wire gauge range for the MX150 terminal family typically covers 18-22 AWG, but confirm the exact terminal part for your wire size. The free-hanging (in-line) mount means the housing is not panel-mounted — it floats in the harness, so the locking ramp and terminal retention take the cable strain.