What this part is
The Molex 391001905 is the 5-circuit member of the Eurostyle 39100 enclosed barrier terminal strip family, rated 20 A per circuit at 300 V. It accepts 12-22 AWG conductors via top-entry screw clamps with a closed bottom — the enclosed barrier construction makes it suited for field-serviceable panel power distribution where exposed live terminals are a hazard or a code concern. With 10 wire entries across two rows, the 2-row layout accommodates dual-wire feed-through routing — common in industrial control panels where the same circuit branches to two loads.
Key ratings for BOM fit
The 20 A per circuit rating is the primary derating parameter for wire-to-panel power bus applications — the 12-22 AWG accepted range spans from fine signal-adjacent control wiring up to supply mains branch circuits. The 0.315" (8.00 mm) pitch sets the panel cutout and drilling template — confirm the existing panel was drilled to this dimension and not to the wider 0.394" pitch used by the 12-circuit sibling in the same family. Operating temperature spans -40°C to 105°C on a polyamide (PA66) body rated UL94 V-0 — covers the thermal envelope of most industrial enclosure environments.
Same-series comparison
The 0391002012 is a 12-circuit member of the Eurostyle 39100 family but sits at a wider 0.394" (10.00 mm) pitch with a 30 A per circuit and 600 V rating — it does not drop into a panel drilled for the 0.315" pitch of the 391001905, and wiring to it would require re-terminating every circuit.