The Molex 0430252010 is a 20-position receptacle from the Micro-Fit 3.0 43025 series, built for wire-to-board power interconnects in harness assemblies. It uses a dual-row layout on a 0.118" (3.00mm) pitch — the same footprint class as the rest of the Micro-Fit 3.0 line, so it mates with the matching pin headers and accepts the standard crimp terminals. The latch lock on each side gives a positive hold against vibration, which matters when this connector lives inside an automotive junction box or an industrial control panel where a loose mate means a service call.
The 20 circuits in two rows mean this receptacle matches a 20-position BOM line — count your circuits before ordering because the 10-position and 12-position siblings share the same pitch but won't fit a 20-way harness. The 3.00mm pitch gives enough room between contacts to handle the 600 V rating typical of the Micro-Fit 3.0 series without forcing a wide board footprint; it also keeps the crimp terminals spaced so you can use standard 20-24 AWG wire without the insulation crowding the next cavity. The glow wire compliant marking means it passes the glow-wire test for appliance safety — a requirement for white goods and HVAC controls that a standard nylon housing might not meet.
You need the matching Micro-Fit 3.0 female crimp terminal (Molex 430300001 for 20-24 AWG, or 430300007 for 18-24 AWG) and a hand or pneumatic crimp tool. For the mating half, use a Micro-Fit 3.0 pin header with the same 3.00mm pitch and 20 circuits — through-hole or surface-mount, straight or right-angle, depending on your board layout.