What the 464379321 is
The Molex 464379321 is a 16-position right-angle male plug in the EXTreme Ten60Power 46437 series — a mixed-contact connector that packs 15 signal contacts and 2 dedicated power contacts into a single housing, all rated 60 A per circuit. That hybrid layout is the series concept: power and signal in one blind-mateable housing so the board gets its high-current bus and control interface without two separate connectors competing for footprint. The housing is black with a board guide and guide pin to enforce alignment during blind mating — critical when 60 A contacts are involved and a mis-strike is not a cosmetic problem.
Termination and board fit
Press-fit tails eliminate solder for the contact array — the 464379321 lands through-hole and seats by force into a plated-through board hole, which matters for high-current bus bars where solder voiding is unacceptable. Right-angle orientation puts the mating face parallel to the daughter card as it slides into the backplane midplane. The board guide and guide pin are not cosmetic — they carry the insertion shear so the contact beams do not take lateral load before they are fully seated.
Contact plating — what 30 µin gold means for this application
Ratings that set the application ceiling
600 VAC / 250 VDC is the voltage envelope — the AC and DC ratings differ because the contact spacing and creepage geometry are governed by different standards bodies at different potentials. The UL94 V-0 flammability rating means the housing self-extinguishes within the prescribed test window, which is a baseline requirement for industrial enclosures. All 16 positions are loaded; there is no partial-load option on this part number.
Lifecycle and sourcing posture
The 464379321 is Active and ROHS3 Compliant — no last-time-buy flag, no successor order code on record in this ledger. It sources to order against an RFQ at BOM quantity. The series base product number is 046437; confirm your position count and the mating half before committing — the press-fit right-angle plug requires the matching EXTreme Ten60Power receptacle to complete the backplane interface. No alternate MPN is cross-referenced here; if the BOM calls for a tin-plated or vertical-orientation sibling, that is a different order code to verify against the full series lineup.