What this is
The Molex 387303105 is the 5-circuit member of the Beau 38730 dual-wall barrier block series. Top termination is screws accepting 14-22 AWG; the bottom terminates to solder turret with an insulated bottom wall. The flange feature at each end provides a positive panel or chassis seat so the block does not shift under vibration or wire tension.
Ratings that drive the fit
The 14-22 AWG range aligns with standard control-circuit wire sizes; the 0.438" (11.12 mm) pitch gives creepage per circuit and makes field wiring easier without increasing the overall strip length significantly. The zinc clear chromate screw finish resists corrosion under panel environments where condensation is a risk. Operating temperature runs from -40°C to 110°C, which covers the span from a cold-store utility box up to a cabinet beside a heat-generating VFD. The PBT/polyester housing material sets the flame class and dielectric strength for the block; the dual-wall barrier geometry adds mechanical robustness to the partitions between circuits compared to a single-wall design.
Lifecycle and compliance
Listed Active with ROHS3 Compliant status. No official successor or cross-reference for this specific order code.
Sourcing bottom line
Quoted to order against BOM quantity. Confirm the circuit count matches the panel wiring plan before committing — this is a single-row 5-position block; the 2-circuit 63 A member of the Eurostyle family carries a different pitch entirely (0.591").