What this is
The 387068006 is a 3-circuit dual-wall barrier block from the Beau 38706 series. Top termination is screw-clamp; bottom termination is a through-hole PC pin designed for PCB mount. Rated 20 A per circuit at 300 V, with an insulation body of polybutylene terephthalate (PBT). The barrier shell is black and the package is bulk.
Wire gauge and current fit
Wire acceptance runs 12-22 AWG. Rated 20 A per circuit. Confirm the circuit duty against your wire ampacity.
Where barrier blocks like this are used
Dual-wall barrier strips are a fixture in industrial control panels and machine wiring harnesses where a service technician needs to land multiple circuits at a single maintenance point with a hand tool. The screw clamp holds the conductor under pressure without a crimp; the PC pin bottom gives a secondary board-level connection for fixed equipment. They are not a high-density signal interconnect — they are a power-distribution and field-wiring junction point.