What this part is
The Molex 387106904 is a 4-circuit single-row barrier block in the Beau 38710 series. It carries a 0.375-inch (9.53 mm) pitch with screw termination on the top side and a PC pin tail for through-hole soldering below — a layout that separates field wiring from the PCB interface in one compact unit.
Ratings that drive the fit
The 15 A per circuit at 300 V rating covers branch-power and motor-control wiring in panel assemblies — the 14-22 AWG range spans the gauge used for those circuits. The nickel-plated brass screw hardware provides a gas-tight termination on the wire side; the PBT glass-filled housing holds its geometry from -40 °C through 100 °C, which handles most industrial enclosure environments without a derating call-out at room temperature. The 2-wall dual barrier construction adds mechanical robustness to the wire side compared with an open strip, which matters when vibration or multiple wire entries per screw point are in play. The 4 wire entries map one-to-one with the 4 circuits — no doubling-up on a single position.
Where barrier blocks live
Barrier strips are the go-to terminal point for panel power distribution — they bridge field wiring from contactors, drives, and power supplies to the PCB without a custom harness. The Beau 38710 series targets industrial control cabinets where screw termination and through-hole PCB attachment keep assembly simple and field-service-friendly.
Lifecycle and compliance
The 387106904 carries Active status with ROHS3 Compliant designation. For a commodity barrier strip in continuous production, this means no last-time-buy concern — it quotes to order against the BOM quantity with no substitute flag on record.