What the 387206310 is
The Molex 387206310 is the 10-circuit member of the Beau 38720 dual-wall barrier strip family. The 0.375 inch (9.53 mm) pitch and single-row layout make it a dense entry point for panel wiring in equipment that needs more than a terminal block but less than a full distribution block — think control cabinets, industrial power panels, and any harness junction where field technicians need a visible, screwdriver-accessible termination point. The top termination is screw-clamp — the wire goes in from above and the screw tightens down on the stripped conductor. The bottom terminates to a PC pin for through-hole reflow or wave solder into a PCB. That dual-sided termination is the key fit check: if your board layout expects a right-angle or surface-mount pin, this is not it.
Ratings that drive the selection
Rated 15 A per circuit at 300 V — that puts it in the low-to-medium power panel entry class. The 14–22 AWG wire gauge range matches standard control wiring in industrial automation equipment. The dual-wall barrier construction adds mechanical standoff between adjacent live segments, which matters in panels where vibration or thermal cycling can walk a wire loose from a single-wall block. Operating temperature range runs from -40 °C to 100 °C — wide enough for unheated outdoor enclosures or machine-tool cabinets that run hot. The insulation housing is UL94 V-0 rated, so it self-extinguishes if a fault arc heats it. The zinc clear chromate screw finish resists the corrosion you pick up from repeated tightening cycles in a field panel.
Sourcing and compliance
The 387206310 is Active and ROHS3 Compliant per the on-record lifecycle entry. No official successor or cross-reference is listed — the 38720 series base product number is the only identifier on record, so if you need a second source, confirm the exact 38720-family position count and pitch match before swapping.