The 30.0µin (0.76µm) gold plating on the mating end gives it the cycle life for repeated engage-and-disengage duty in power or signal circuits where corrosion resistance matters — think industrial control cabinets, test equipment, or field-serviceable harnesses where the contact sees more than a few mate cycles.
The 20-24 AWG range covers the most common signal and low-power circuit sizes in a Multimate III+ harness. For a harness builder, this means one contact part number covers multiple wire sizes on the same assembly — fewer line-changeovers.
Gold at 30.0µin (0.76µm) is a heavy-duty plating. This thickness handles repeated insertion and extraction without exposing the brass base metal to oxidation.