The Molex 1729522001 is a 20-circuit receptacle housing from the Micro-Fit 3.0 172952 series, designed for wire-to-board power interconnects in harness assemblies. The housing is polarized with a keying ramp to prevent mis-mating with the matching header — a common requirement in vibration-prone environments like industrial control cabinets or server PSUs.
Terminal Fit and Crimp Details
This housing accepts the standard Micro-Fit 3.0 crimp terminals, which are ordered separately. The terminal cavities are sized for 20 to 24 AWG wire, and the housing includes a primary latch that locks the terminal in place with an audible click. A secondary Terminal Position Assurance (TPA) retainer (sold separately) can be inserted after the terminals are loaded to confirm full seating — a step that matters for high-vibration or field-service harnesses where a loose terminal is a warranty risk.