The Molex Eurostyle 39100 391001912 is a 12-circuit enclosed barrier terminal strip — a screw-clamp strip for terminating individual wires to a panel or chassis. It carries 20 A per circuit at 300 V, with a 0.315" (8.00 mm) pitch that gives enough barrier spacing to keep the 300 V from tracking across in a damp panel. The dual-row layout brings 24 wire entries into a single strip, so a 12-circuit run can land both sides of a power loop or a multi-conductor cable without a second block. Top termination is screws (steel, zinc finish), bottom is closed — no through-panel studs, just a solid base that bolts to the chassis or panel. Wire range is 12-22 AWG, which covers most control-circuit and small-power wiring. The enclosed barrier design means each circuit is walled off from its neighbour — a ring lug under a screw, done, and the barrier keeps a stray strand from shorting to the next terminal.
The 12-circuit 391001912 shares the same 0.315" (8.00 mm) pitch, 20 A rating, 300 V, screw-top closed-bottom construction, and white colour with the 8-circuit 391001908. The only difference that matters for a BOM line is the circuit count — 12 circuits vs 8 — which changes the number of wire entries (24 vs 16) and the overall strip length. If the panel layout was dimensioned for the 8-circuit block, the 12-circuit version is longer and won't drop into the same mounting hole pattern without a bracket change.
Active lifecycle — no last-time-buy or phase-out notice. RoHS3 compliant.