What it is
The Molex 387317202 is the 2-circuit member of the Beau 38731 series — a dual-wall barrier block rated 20 A per circuit at 300 V, with a 0.438" (11.12 mm) pitch spaced for chassis and panel mounting. Top termination is screws with a captive plate; the bottom accepts a standard 0.250" quick-connect tab, insulated. The housing is black thermoplastic rated UL94 V-0 over an operating range of -40 °C to 100 °C.
What the ratings mean for selection
The 20 A per-circuit rating at 300 V covers most panel-level power distribution jobs in its wire gauge range — 12-22 AWG. Dual-wall construction means the barrier wall wraps around two sides of each contact cavity, which gives better dielectric isolation than a single-wall open strip. The captive-plate screw at the top eliminates individual wire-end flex under vibration; the 0.250" quick-connect on the bottom accepts standard male tabs for downstream modular wiring without reterminating. The 2-wire-entry count (one per circuit per end) means this is a straightforward branch or pigtail termination point — not a daisy-chain bus bar requiring multiple entries per circuit. The zinc-clear-chromate terminal screw finish is standard for indoor industrial environments; confirm the 100 °C maximum operating temperature against the actual panel ambient in high-derate applications.
Where this class is used
Barrier blocks of this type are the workhorse panel power interconnect in industrial automation enclosures, motor drives, HVAC controls, and commercial equipment — anywhere a field technician needs a visible, screw-accessible termination point that accepts a wide wire gauge range without a crimp tool. The dual-wall enclosed body also provides basic touch-safe isolation that open-barrel terminal blocks lack.
Can it swap with a Eurostyle 39100?
The two Eurostyle 39100 peers on record — 0391002502 (0.591" pitch, 63 A, enclosed 2-row) and 0391002012 (0.394" pitch, 30 A, 12-circuit) — both use enclosed single-piece barrier construction and a different pitch spacing. Neither shares the 387317202's 0.438" panel hole pattern, and neither uses the same barrier type: the Beau is a 2-wall dual construction; the Eurostyle entries are enclosed. No direct panel drop-in substitute exists within the cited peer range — a re-layout with new hole spacing would be required.
Sourcing posture
Active and ROHS3 Compliant per the on-record lifecycle entry — quoted to order against the BOM quantity. No official successor order code is listed. The 2-circuit count and dual-wall construction are specific to the Beau 38731 series; confirm the exact circuit count matches the BOM line before committing.