What it is and where it fits
The Molex 391001904 is the 4-circuit member of the Eurostyle 39100 series — a 2-row enclosed barrier terminal strip with 0.315" (8.00mm) pitch, rated 20 A per circuit at 300 V. The PA66 housing carries a UL94 V-0 flammability rating across an operating range of -40°C to 105°C, which covers most industrial control panel environments without derating concerns.
Termination and wire entry
Top termination is screw-type with zinc-plated steel hardware; the bottom is closed — wire entry is via the top only. The strip accepts 12-22 AWG across 8 wire entry points (4 per row), so the 4-circuit count delivers 2 conductors per circuit in standard daisy-chain panel wiring.
Sourcing and compliance
The 391001904 is listed Active and ROHS3 Compliant — no official successor or cross-reference appears in the series record. Specify it directly on the BOM against the panel wiring position count; confirm the 4-circuit / 8-wire-entry density matches the harness run before committing. Sourced to order against RFQ.