What this barrier strip is
The Molex 387207515 is the 15-circuit member of the Beau 38720 series — a single-row dual-wall barrier block with a 0.375 inch (9.53 mm) pitch. Top termination is screws with a captive plate that holds the wire against the bus bar without it walking out when the screw loosens in service; the bottom terminates to a PC pin for through-hole board mounting. Rated 25 A per circuit at 300 V, it accepts 12–22 AWG wire. The dual-wall (2-wall) barrier construction encloses the bus bars on both sides of each circuit position, which gives it more mechanical robustness than an open-style strip — the kind of layout that matters when the block is panel-mounted in a cabinet that sees repeated service cycles or vibration.
What the ratings mean for the fit
The 0.375 inch pitch sets the mounting hole spacing — confirm the board footprint accepts the 9.53 mm hole pattern before committing. The 25 A per-circuit rating governs power-distribution duty in the 300 V range; the limiting factor for field wiring is the 12–22 AWG window, which covers the common sizes used in industrial control panels and motor connections. Operating temperature is −40 °C to 100 °C with a UL94 V-0 housing — solid for most enclosed-panel and industrial-climate applications. The zinc clear-chromate screw finish resists the surface corrosion that plain steel picks up in damp environments.
Lifecycle and sourcing
The 387207515 is listed Active with ROHS3 compliance — no last-time-buy risk on a standard series member. The block is quoted to order against BOM quantity; confirm the tray package count matches your panel assembly run size before specifying.