Barrier block, 2 circuits, 20A at 300V — panel wiring terminal selection
The Molex 0387007502 is a 2-circuit barrier block from the Beau 38700 series, designed for panel and PCB wiring where a screw-clamp termination is preferred over a crimp or IDC connection. The 0.325" (8.26mm) pitch spaces the terminals wide enough for 14-22 AWG wire with the captive plate screw top termination, while the PC pin bottom termination anchors the block through the PCB. Rated 20A at 300V, the block handles motor control, power distribution, and industrial control cabinet wiring where the 2-wall (dual) barrier prevents wire creep between terminals.
The 14-22 AWG wire range means the block accepts solid or stranded wire from a 14 AWG power feed down to a 22 AWG signal tap, with the captive plate clamping the conductor without a separate ferrule.
Termination and mounting — checklist cadence
The through-hole mounting requires the board to have plated holes at the 0.325" pitch; the dual barrier walls isolate each wire entry from the adjacent circuit. Two wire entries match the two circuits — one wire per position.