The Molex 430451414 is a 14-circuit, dual-row header from the Micro-Fit 3.0 43045 series, designed for board-to-wire power and signal interconnects. It carries 8 A per circuit at 600 V, with a 3.00 mm pitch that balances current density against board-space efficiency — enough creepage for the voltage rating without blowing up the footprint.
The 8 A per circuit rating is the headline number, but it's derated above 25 °C ambient — the LCP housing is rated UL94 V-0 and handles the temperature rise, but pack the circuits at full load in a hot enclosure and you'll want to check the derating curve. The 3.00 mm pitch and row spacing set the board footprint: 0.118" centers, which is standard for this class of connector. The 30.0 µin gold on the mating side is the real differentiator — it's what lets this header survive 50+ mating cycles in a field-serviceable assembly without contact fretting. Tin contacts would gall and oxidize under the same duty.
This header mates with any standard Micro-Fit 3.0 receptacle housing that carries the matching 14-circuit, dual-row layout — the locking ramp engages the receptacle latch for a positive lock.