The Molex 0009484048 is a 4-circuit, single-row receptacle from the KK396 series, built on the 0.156" (3.96 mm) pitch that defines the family. Rated 5 A per contact at 600 V, with a UL94 V-0 polyester housing that handles the operating range from -40°C to 105°C.
The 600 V voltage rating gives substantial headroom above typical 24-48 V industrial or 12-24 V automotive rails, so voltage drop across the mated pair is negligible in those applications.
This receptacle mates with the KK396 crimp-header pin headers at the same 0.156" pitch. For a wire-to-board build, the matching crimp terminals (series 2478 or equivalent) are inserted into the header housing first, then the receptacle is mated. The through-hole solder tails are 0.120" (3.05 mm) long, which fits standard 1.6 mm PCBs with enough protrusion for a reliable fillet.