What the 391001805 is and where it fits in the Eurostyle 39100 series
The Molex 391001805 is a 5-circuit Eurostyle terminal strip in a 2-row configuration, built around a 0.315-inch (8.00 mm) pitch with screw-clamp top termination and a closed bottom — this is the smallest-position member of the 39100 family, carrying the same PA66 nylon housing and zinc-plated steel terminal screw hardware as the rest of the series. Rated 20 A per circuit at 600 V, it accepts 12–22 AWG conductors and is intended for chassis and panel mounting in industrial automation and power distribution applications where a 2-row enclosed-barrier strip is the specified form factor. The enclosed-barrier shroud covers the live screw heads on both sides of each circuit partition — dead-front safety is the design intent, meaning this strip is suited for applications where operator access to energized terminations must be prevented.
Pitch and circuit count — the dimensions that drive the BOM match
At 0.315-inch (8.00 mm) pitch across 5 circuits in 2 rows, the 391001805 occupies a tighter board footprint than the 12-circuit 0391002012, which uses a 0.394-inch (10.00 mm) pitch — those two pitches are not mechanically interchangeable in a panel cutout designed for the wider spacing, and a board routed for 0.394-inch will not accept the 0.315-inch strip without re-layout. The 0391002502 — a 2-circuit member rated 63 A at the same 600 V — sits at 0.591-inch (15.00 mm) pitch and serves a different power tier entirely; it is not a density-scaled alternative to the 391001805.
Lifecycle and sourcing posture
marks the 391001805 as Active and in normal production — the part is quoted to order against BOM quantity. confirms ROHS3 Compliant status, which is the relevant EU supply-chain gate for most panel-build and industrial OEM procurement.
Material and construction for compliance and panel acceptance
The housing is polyamide (PA66) nylon rated UL94 V-0 — the standard flammability classification most industrial panel builds require before acceptance. Operating range spans –40°C to 105°C, which covers the thermal envelope of most factory-floor and process-control enclosures. Terminal screws are zinc-plated steel, which is adequate for copper or brass conductors in the 12–22 AWG range; verify compatibility with aluminium conductor if that is a field requirement.