What this block is
The Molex 387206306 is the 6-circuit member of the Beau 38720 series — a single-row, dual-wall barrier strip with a 0.375-inch (9.53 mm) pitch, rated 15 A per circuit at 300 V. The black thermoplastic housing carries a UL94 V-0 flammability rating and operates from -40°C to 100°C, making it a standard power-distribution terminal block for machine-wiring and panel-harness assemblies where wire entry is screw-clamped and the board side terminates as a through-hole PC pin.
What the ratings mean for the job
The 15 A per circuit rating is the per-contact limit at the derated operating temperature — for a dual-wall barrier block this ceiling is driven by the screw-clamp interface and the wire gauge range. The block accepts 14-22 AWG conductors; at 14 AWG you are at the top of the wire-gauge window and the screw torque specification in the product drawing governs the actual ampacity, not the headline 15 A figure. The 300 V rating sits below what heavier Eurostyle strips typically handle — confirm the circuit voltage stays within 300 V before committing. The dual-wall barrier provides two insulating sidewalls between adjacent terminals, suppressing creepage across the terminal row under contaminated or humid panel conditions. The zinc-clear-chromate screw finish resists the white-corrosion bloom you see on plain zinc in damp environments; for outdoor or wash-down panels this matters more than it does in a sealed enclosure.