What this is — and where the Beau 38780 sits
The Molex 387800308 is the 8-circuit member of the Beau 38780 series, a dual-row 2-wall (dual) barrier block designed for chassis and panel wiring in industrial control equipment. The pitch sits at 0.438" (11.12 mm) — between the tighter Eurostyle strips common in compact enclosures and the wider-spaced blocks used for power feed-through — and the flanged mounting holes anchor it directly to a cabinet backplane or subpanel without a DIN rail carrier. At 15 A per circuit and 300 V, this rating class handles industrial control loads — the kind found in contactor coils, indicator circuits, and signal distribution. The insulation is thermoplastic rated UL94 V-0, which satisfies flammability requirements for enclosed industrial enclosures.
Wire termination and field-wiring fit
Top termination runs screws with a captive plate — the plate holds the wire in position as the screw tightens, so even a stranded 14 AWG lead does not get pushed out of the entry when the torque hits. Bottom termination is closed, meaning no open slot on the underside that would allow debris to fall into the circuit row during installation. Wire range is 14-22 AWG; the 14 AWG lower limit sets the practical current-carrying floor — a 15 A circuit loaded near rating should use 14 AWG, not 16 AWG, to stay within the ampacity table for bundled building wire.
How it stacks against the Eurostyle peers
Neither the 0391002012 nor the 0391002502 is a drop-in replacement for the 387800308 — the series diverge in pitch and circuit count in ways that affect the panel cutout. The 0391002012 carries 0.394" (10.00 mm) pitch with 12 circuits and 30 A per circuit at 600 V, so it needs a narrower, taller footprint than the Beau; the 0391002502 runs 0.591" (15.00 mm) pitch with only 2 circuits at 63 A — a completely different form factor for heavy power feed-through. If a panel was laid out for a Eurostyle strip, the 387800308 will not seat the same mounting holes without rework.
Compliance and sourcing posture
Lifecycle is Active and the part carries ROHS3 Compliant status, covering the restriction-of-substances declaration for industrial equipment destined for EU and other regulated markets. No last-time-buy notice or NRND flag is listed. Sourced to order against an RFQ — confirm the BOM quantity and lead time requirement before committing.