The Molex 430452412 is a 24-circuit, dual-row header from the Micro-Fit 3.0 43045 series, designed for board-to-wire power and signal interconnects. It uses a 3.00 mm pitch, which provides enough creepage distance to support the 600 V rating without forcing an oversized board footprint.
The 8 A per-circuit rating is the headline number, but the contact finish — 100.0 µin of tin on the mating surface — is what actually governs the duty. The -40°C to 105°C operating range and UL94 V-0 rated LCP housing mean this header can sit inside an automotive ECU or an industrial controller without concern for thermal or flame compliance.
How it compares within the series
Against the 12-circuit member of the same Micro-Fit 3.0 family (430451210), the 430452412 doubles the position count at the same 3.00 mm pitch and 8 A per-circuit rating. The decision between them is purely a circuit-count match to the BOM — the footprint, mating half, and current headroom are identical.