0.375" Pitch, 13-Circuit Barrier Block for Panel-Mount Power Distribution
The Molex 0387700113 is a 13-circuit barrier terminal block from the Beau 38770 series, built for through-panel power distribution where a screw-terminated, dual-wall barrier strip is the right call. The 0.375" (9.53mm) pitch gives you enough room between terminals to land 14 AWG wire cleanly, and the dual-wall barrier design — two walls between each pair of terminals — prevents a stripped conductor from bridging to the adjacent circuit. Rated 15A at 300V, this block handles the kind of power you'd route inside an industrial control cabinet or a power distribution panel, not signal-level work. The flange on each end of the block is the mounting interface — screws through those flanges secure the block to a chassis or panel, so the mechanical load of landing and torquing wires is taken by the panel, not the terminal screws alone.
Wire gauge range is 14-22 AWG, terminated with screws. The top-termination screws have a zinc, clear chromate finish over steel — the chromate layer resists the kind of corrosion you see in a cabinet that cycles between warm days and cool nights. The bottom termination is closed (no through-hole pins), so this is strictly a panel-mount block: wires enter from the top only, and the bottom of the block sits flat against the mounting surface. With 26 wire entries across 13 circuits, each circuit takes two wires — handy for daisy-chaining power from one block to the next.