The Molex Eurostyle 39100 0391002004 is a 4-circuit enclosed barrier terminal strip in a 2-row layout, on a 0.394" (10.00mm) pitch. It terminates top-side with screws and has a closed bottom — no through-panel access, so wiring lands on the screws and stays inside the housing. It's rated for 30A per circuit at 600V, with a wire range of 10-18 AWG, making it a fit for power distribution in industrial panels, control cabinets, and HVAC gear where you need a clean, screw-terminated power takeoff point.
With 600V on the same block, you've got enough headroom for 480V three-phase distribution or a 277V lighting circuit without pushing the creepage limits. The 10-18 AWG range covers both heavy feeder wire (10 AWG) and smaller control wiring (18 AWG) on the same strip, so you can land mixed gauges as long as the screw torque is set per the larger conductor.
The 0391002004 carries 4 circuits in 2 rows; the 0391002005 is the 6-circuit version in the same 2-row layout, same 10.00mm pitch, same 30A/600V rating, same white PA66 housing. The only difference that matters for a BOM line is the circuit count — 4 vs 6 — so pick the one that matches your position count. Everything else — pitch, current, voltage, wire range, mounting — is identical.