The Molex Beau 38720 387207519 is a 19-circuit barrier strip terminal block on a 0.375" (9.53 mm) pitch, designed for through-hole PCB mounting with screw-and-captive-plate top termination and PC pin bottom termination. This is a single-row, dual-wall barrier block rated for 25 A at 300 V, accepting wire from 12 AWG to 22 AWG.
The 25 A per-circuit rating at 300 V sets the power-handling ceiling for each wire entry — this is a bus-level current capacity, not a signal line, so plan for the temperature rise across the full 19-circuit load. The 0.375" (9.53 mm) pitch gives generous creepage distance for the 300 V rating without crowding the board layout; each circuit occupies about a third of an inch of board edge.