What it is and where it fits
The Molex 391002012 is the 12-circuit member of the Eurostyle 39100 series — a dual-row enclosed-barrier terminal strip rated 30 A per circuit at 600 V. The 0.394" (10.00 mm) pitch and 24 wire entries (two per circuit) define the panel footprint; the enclosed barrier is the key safety feature for live-panel or field-wiring environments where accidental contact is a risk. It mounts directly to chassis or panel surfaces via screw-down feet, accepts 10–18 AWG conductors on the top termination, and carries a UL94 V-0 polyamide housing rated for continuous operation from -40°C up to 105°C.
What the ratings mean for the build
The 600 V rating places it in industrial power distribution territory, well above typical control-circuit voltages. The dual-row layout and two wire entries per circuit (top entry, bottom closed) mean you can daisy-chain adjacent circuits without a jumper bar — useful in bus-tap arrangements. The enclosed barrier prevents field technicians from bridging adjacent terminals with a stray ferrule or stray wire strand, which is the primary reason this type replaces open-barrier strips in UL-rated panel assemblies. The zinc-plated steel terminal screw finish handles repeated torquing without galling, which matters when the panel builder is landing 10–12 AWG solid or stranded conductors under field conditions. The polyamide housing tolerates the thermal cycling inside control cabinets — the 105°C upper limit gives headroom above typical cabinet operating temperatures even when mounted near heat-generating contactors.
Lifecycle and sourcing posture
The 391002012 carries an Active product status and ROHS3 Compliant designation — it is in normal production and can be quoted to order against BOM quantities. No official successor or cross-reference order code appears in the lifecycle record, so the 391002012 is the confirmed BOM line for this configuration. There is a same-series peer (0391002012) that shares the identical electrical and mechanical ratings — same 12 circuits, same 0.394" pitch, same 30 A, same 600 V, same white housing — listed under a different MPN format within the 039100 base series. If your BOM was raised against that alternate code, the 391002012 will drop in with no change to wire routing or torque settings.