What this part is
The Molex 387006303 is the 3-circuit member of the Beau 38700 barrier block series. It uses a dual-wall 2-wall barrier construction with a 0.325" (8.26 mm) pitch — tight enough for panel-density runs but wide enough to accommodate 14-22 AWG field wiring under the screw clamp. Top termination is a screw clamp that grips the full conductor; bottom termination is a PC pin sized for through-hole PCB insertion. The black thermoplastic housing carries a -40°C to 130°C operating window — wide enough for control cabinet duty near heat sources or in unconditioned enclosures. Terminal screws use a zinc clear-chromate finish on steel — adequate for indoor industrial environments, though the finish is worth noting if the panel sees wash-down or persistent condensation. The 15 A per circuit rating at 300 V puts this in the light-to-medium power bus category, suited for control circuits, motor interlock signals, or auxiliary distribution rather than high-amperage bus bars.
Sourcing and compliance
Listed Active with ROHS3 Compliant status — no last-time-buy concern and no compatibility flag for European market deployment. The part has no official successor or cross-reference, so the BOM line stands as-is when the circuit count and pitch match the application.