The Molex Beau 38720 387206304 is a 4-circuit barrier block with a 0.375" (9.53 mm) pitch, designed for through-hole board mounting. It uses screw top termination for field wiring and PC pin bottom termination for solder connection to the PCB. This is a single-row, dual-wall barrier strip rated for 15 A at 300 V, accepting 14-22 AWG wire — a common choice for power distribution and control circuit junction points inside industrial enclosures.
The 4-circuit 387206304 shares the same 0.375" (9.53 mm) pitch, 15 A / 300 V rating, and 14-22 AWG wire range as the 6-circuit 387206306 and the 10-circuit 387206310. The 387206204 is a 4-circuit variant with an added mounting flange for chassis or panel mount, but it still uses the same PC pin bottom termination.
The dual-wall barrier design isolates adjacent terminals, reducing the chance of accidental shorting during wiring or maintenance.