What it is and where it sits in the series
The Molex 398890042 is the 2-position member of the Eurostyle 39889 series — a side-entry screw-clamp terminal block designed for through-hole PCB mounting at 0.200" (5.08 mm) pitch. Rated 17.5 A per circuit at 300 V, it accepts 14–30 AWG conductors into a rising cage clamp and ships in a single horizontal orientation with the board. The black PA66 housing carries a side interlocking feature that lets adjacent blocks snap together into multi-pole configurations — a standard way to build up power distribution rails in panel or DIN-mount assemblies.
What the ratings mean for the fit
The 17.5 A per-circuit rating at 300 V is the ceiling for this class. The wire gauge range (14–30 AWG) sets the practical conductor boundary; the M3 screw with 0.6 Nm torque is the clamp target for field installation. Nickel-plated clamp and screw resist corrosion at the interface; the tin-plated copper contact is standard for permanent connections. Operating range is -40°C to 105°C, which clears most factory-floor and enclosure-mounted applications. The PA66 housing material sets the thermal ceiling; derate the current per the manufacturer's curve if the terminal is carrying sustained full-load in a closed panel at the upper end of that range.
Sourcing and compliance
Listed as Active and ROHS3 Compliant. No official successor or cross-reference — confirm the BOM position count matches the 2-circuit configuration before committing.