The 387006304: Wire range 14-22 AWG covers most field wiring for signal and moderate power circuits. The top termination uses steel screws with a zinc clear chromate finish — corrosion-resistant for typical indoor industrial environments. The housing is black, which is the standard colour for this series.
How it compares within the Beau 38700 series
The 387006304 is the 4-circuit member of the Beau 38700 series. Against the 3-circuit 387006303 at the same 0.325" pitch and 15 A rating, the only difference is the position count — so the board footprint changes by one terminal position, but the per-circuit ratings and termination style are identical. If your BOM calls for 3 circuits, the 387006303 is the direct drop-in; if you need 4, this is the one. The 2-circuit 387006302 follows the same pattern. There is also a flange-mount variant, 387006103, which adds chassis/panel mounting tabs for applications where the block must be bolted to a panel rather than soldered directly to the PCB. That part shares the same pitch and ratings but adds mechanical mounting flexibility.