What it is and where it sits in the series
The Molex 464379303 is the 3-position right-angle plug in the EXTreme Ten60Power 46437 series — a board-level power blade connector designed for high-current bus-bar and board-to-board power distribution at up to 60 A per circuit. All three positions are populated. The 0.217 in (5.50 mm) pitch and blade/plug geometry place it at the power end of the series footprint, as opposed to the signal-density end; the 3-position count is the series' smallest power-circuit variant.
Ratings that drive the fit
Current is the primary selection parameter: 60 A per circuit is the headline figure, but for a blade/plug pair the real derating path runs through the system-level thermal stack, not the contact alone. Voltage is rated 600 VAC / 250 VDC — confirm this matches the bus voltage on the harness side, not just the wire rating. Contact finish is gold at 30.0 µin (0.76 µm), which supports the 60 A mating interface against oxidation under load cycling. The housing is UL94 V-0 rated and the operating window spans -40°C to 105°C — broad enough for most industrial backplane and power-module environments without special screening.
Termination and board-mounting notes
The 464379303 terminates via press-fit through-hole — this eliminates solder for the power blade interface and is common on heavy-current board assemblies where solder fillet integrity under vibration is a concern. Right-angle orientation suits edge-launched board entry; the board guide and guide pin take lateral drift out of the mating sequence and keep the blades aligned through the stack. Guide-pin placement must be accounted for in the keep-out zone on the PCB — check the footprint drawing before committing the layout.