What the 464379323 is and where it fits
The Molex 464379323 is the right-angle, through-hole plug member of the EXTreme Ten60Power 46437 series — a hybrid power-and-signal interconnect built around a 60 A per circuit rating with a mixed contact layout of 15 signal and 6 power positions in the same housing. Gold contact plating at 30 µin (0.76 µm) gives the mating interface durability against fretting under vibration, which is the primary failure mode in high-current board-to-wire power interconnects. Press-fit termination at the board interface means the contacts are driven into plated through-holes without solder — the press-fit tail carries the 60 A current path while eliminating the voiding and thermal-cycle risk that solder reflow introduces at high amperage. The right-angle orientation routes the cable exit parallel to the board plane, which constrains the z-height envelope compared to a vertical plug but widens the chassis layout window in dense industrial enclosures.
What the ratings mean for your BOM line
The 60 A headline rating is per-contact and applies to the power-position circuits; the signal positions carry low-level control traffic and are rated accordingly by the contact size. When building the derating curve for your harness, apply the 105°C operating ceiling and work backward from your ambient — the UL94 V-0 housing material sets the upper temperature boundary for the connector body itself, not the wire gauge. The 600 VAC / 250 VDC voltage rating covers the standard industrial three-phase bus voltage range, so no derating for voltage at typical automation bus levels. The board guide and guide pin features on the housing are specifically there for blind-mate alignment in stacked or semi-enclosed assemblies — without them, a 60 A connector with six large power blades is prone to canting and mis-engagement during field service. If the mating half sits behind a panel or in a mezzanine stack, those guide pins are load-bearing during insertion and must not be bypassed with a non-guided receptacle.