12-Position, 4-Row Housing for CRC 51238 Harnesses
The Molex 0512381211 is a 12-circuit receptacle housing from the CRC 51238 series, arranged in 4 rows on a 3.00 mm pitch. It is a panel-mount, latch-lock housing designed for wire-to-board or wire-to-wire applications where a compact, multi-row power or signal interconnect is needed — common in automotive, industrial control, and appliance harness assemblies.
What the 4-Row, 12-Position Layout Means for Your Build
The 12 positions across 4 rows means the mating header will have a corresponding 4-row pin field, with 0.118" (3.00 mm) row spacing.
Contacts Are Not Included — Plan Your Terminal Order
A common procurement trip-up: the 0512381211 housing ships without contacts. The insulation material is glass-filled PBT, which holds up to the crimping process and the 105°C operating ceiling without creep.
Mating Half and Panel Mounting
The panel-mount feature allows the housing to be fixed to a chassis or enclosure panel, which is useful when the harness needs a serviceable disconnect point rather than a free-hanging connection. Confirm the panel cutout dimensions from the series drawing before committing the layout.