The Molex 387206812 is a 12-circuit barrier strip from the Beau 38720 series, built for panel or PCB termination of 14-22 AWG wire. It uses a dual-wall (2 Wall) barrier design with 0.375" (9.53 mm) pitch, rated 15 A at 300 V. Top termination is via nickel-plated brass screws; bottom termination is PC pins for through-hole mounting. The black PBT insulation carries a UL94 V-0 rating.
What the Ratings Mean
The 15 A per-circuit rating is the continuous current limit per screw terminal — sized for motor control, lighting, or power distribution circuits where a ring lug under a screw is the standard termination. The 300 V rating with the 0.375" pitch means the barrier spacing is adequate for 300 V line-to-line or line-to-ground in dry indoor environments; in a humid pump house, the dual-wall barriers add extra creepage path to reduce tracking risk. The 14-22 AWG wire range accepts solid or stranded copper — a ring or spade lug crimped on 14 AWG is the most secure fit under the screw head. The nickel-plated brass screws resist corrosion in industrial cabinet atmospheres. The flange feature allows panel or chassis mounting in addition to the through-hole PCB pins, giving the installer a mechanical anchor independent of the solder joints.