Barrier Block for Panel Wiring — 4 Circuits, Screw Termination
The Molex 0387203204 is a 4-circuit barrier terminal block from the Beau 38720 series, designed for chassis or panel-mounted power distribution where a screw-terminated, solder-turret connection is required. The 0.375" (9.53mm) pitch gives enough spacing between terminals for 14-22 AWG wire with a dual-wall barrier that prevents accidental shorting between adjacent circuits. Rated 15A at 300V, this block handles typical control panel and industrial equipment branch circuits without derating at the -40°C to 100°C operating range. The black thermoplastic insulation carries the UL-recognized flame rating expected for equipment inside an enclosure.
Wiring and Termination — Screw Clamp with Solder Turret Bottom
The bottom termination is a solder turret, insulated from the housing, so the block can be wave-soldered to a PCB or hand-wired into a terminal strip. Four wire entries match the four circuits; each entry accepts one 14-22 AWG conductor. The dual-wall barrier between terminals gives physical isolation between adjacent wires, reducing the chance of a stray strand bridging circuits during termination.
Mounting and Panel Fit — Flange for Chassis or Panel
The block includes a flange for screw-down mounting to a chassis or panel — no DIN rail adapter. Single-row layout keeps the footprint narrow; the 0.375" (9.53mm) pitch means the four circuits span about 1.5 inches plus the end flanges. Panel-mounting screws go through the flanges, so the block stays fixed during wire termination and vibration. The 1-row, 4-circuit configuration is a common building block for a fused or switched power entry point.