The Molex Beau 38770 387700104 is a 4-circuit barrier strip with a 0.375" (9.53 mm) pitch, designed for panel-mount power distribution where screw-terminated field wiring meets a closed-bottom barrier block. It carries 15 A per circuit at 300 V, with the dual-wall barrier providing isolation between adjacent terminals — a standard choice for control cabinets, HVAC panels, and industrial junction boxes where the installer lands solid or stranded 14-22 AWG wire under zinc-plated steel screws.
Against the 7-circuit 387700107 at the same 0.375" pitch and 15 A rating, this 4-circuit version fits a lower-density BOM line — same flange-mount footprint per circuit, same wire range, same dual-wall barrier. The circuit count is the only selection difference; the panel cutout and wiring pattern scale linearly with position count.
The flange feature allows screw-mounting to a panel or chassis — the barrier strip is not PCB-mounted, so the flange is the primary mechanical retention. With 8 wire entries across 2 rows, each circuit accepts two wires, common for daisy-chaining or feed-through wiring in a junction box.