What it is
The Molex 387700308 is the 8-circuit member of the Beau 38770 dual-wall barrier strip series. Pitch is 0.375" (9.53 mm) across two rows, giving 16 individual wire entry slots — one above and one below each barrier wall. Top termination is screw-driven with a captive plate that holds the conductor in place while you tighten, so you do not need to gang-wire or hold a ferrule under torque. Bottom termination is closed.
Ratings that drive the fit
Rated 15 A per circuit at 300 V — that 15 A ceiling is the limiting factor for power feed-through versus the 30 A and 63 A ratings on the Eurostyle 39100 peers. If the circuit is carrying motor loads or inrush, the Beau 38770 stays below its thermal limit at 15 A; step up to the 39100 series only if the current demand exceeds that. Wire gauge range is 14-22 AWG; the captive-plate screw termination accepts the heavier end of that range without a ferrule but the smaller AWG requires care to avoid wire-bundle compression under the plate.
Where it goes
Chassis and panel-mount orientation with a flange feature means it bolts directly to a cabinet wall or DIN-rail-adapter plate. The PBT housing carries a UL94 V-0 flammability rating — acceptable for industrial enclosure interiors. The dual-wall barrier geometry keeps adjacent circuits separated under vibration, which matters in motor-drive cubicles and power-distribution panels where wire bundles shift under load cycling.
Against the Eurostyle 39100 peers
The 0391002012 runs at 0.394" pitch (slightly wider) and 12 circuits at 30 A — more positions and twice the current ceiling, but it is a different series with a different housing footprint and white color, so it does not drop into the same panel cutout without re-drilling. The 0391002502 is a 2-circuit, 63 A block at 0.591" pitch — high current but only two positions, a different problem entirely. Neither is a direct cross; the 387700308 fills the 8-circuit, 15 A, black-housing slot that the Eurostyle line does not serve at this position count.