What this part is
The Beau 387406102 is a 2-circuit dual-wall barrier strip, rated 15 A per circuit at 300 V, with a 0.438-inch (11.12 mm) pitch across its single row. Top termination is a screw clamp accepting 14–22 AWG wire; the bottom terminates in a PCB pin for through-hole mounting to the panel board — a common pattern for industrial control panels where field wiring connects above and the board seats below. The flange feature on the body provides a mounting face for fasteners, keeping the strip seated against the panel surface under wire pull or vibration — important in any harness where cable dress pulls on the termination. Insulation is polybutylene terephthalate (PBT), rated for –40°C to 100°C operating temperature, which covers the range of most enclosed-panel and industrial automation environments. The zinc clear-chromate terminal screws and steel screw material are standard for this class — the plating resists the oxidation that would otherwise loosen a clamp joint on a bare-copper wire over thermal cycling.
What it does not cross-reference to
The listed Eurostyle 39100 peers (0391002502 and 0391002012) are enclosed-barrier, dual-row terminal strips in a different series — different barrier type, different body geometry, different termination profile. They are not drop-in panel replacements for the Beau 38740 without reworking the panel cutout and wire routing.