What this is
The Molex 386608807 is the 7-circuit member of the Beau 38660 series — a single-row barrier block rated 45 A per circuit at 600 V, with a 0.500 inch (12.70 mm) pitch. Top termination is screws with a captive plate; the bottom exits as a PC pin for through-hole board mounting. The housing is black polybutylene terephthalate (PBT), the barrier is a 3-wall tri-barrier construction, and the screw hardware is zinc with yellow chromate finish over steel. Operating range is -40 °C to 110 °C.
What the ratings mean
The 45 A per circuit rating at 600 V is paired with an 8-18 AWG wire range; the 3-wall tri-barrier provides the creepage distance the 600 V rating demands between adjacent circuits. The dual-termination architecture — screw clamp topside with a captive plate, PC pin bottom — is the common industrial panel-wiring pattern: field technicians terminate field wiring at the screw head without a special tool, while the board-side connection is wave-soldered or hand-soldered as a permanent joint. The captive plate on the screw termination prevents the plate walking off the screw during vibration or repeated retermination — a practical durability detail on a part expected to see field service.
Where these are used
Beau 38660 barrier blocks are panel-wiring interconnects used to distribute power and signal commons across industrial equipment — motor drives, control panels, lighting rigs, and automation cabinets. The screw-clamp topside accepts field wiring without crimping, which matters in applications where conductors are replaced or upgraded during maintenance. The 3-wall tri-barrier provides the physical separation needed between adjacent live conductors at line voltage.
Lifecycle and compliance
Listed as Active and ROHS3 Compliant. The 3-wall tri-barrier, zinc/yellow-chromate hardware, and PBT housing are standard specifications for this series. Confirm the housing flame rating required by your equipment class before committing to the BOM line.