Barrier Block for Panel Wiring — 8 Circuits, Captive Screw Termination
The Molex Beau 38770 387700308 is an 8-circuit barrier block with a 0.375" (9.53 mm) pitch, designed for chassis or panel mounting in power distribution and control panel applications. It carries a 15 A current rating at 300 V and accepts 14-22 AWG wire, making it a straightforward choice for terminating field wiring in industrial cabinets, HVAC units, and similar equipment where a screw-terminated barrier strip is specified. The dual-row layout gives you 16 wire entries across 8 circuits — each circuit has two screw positions, which is handy when you need to land two wires on the same pole or daisy-chain the feed through the block. The top termination uses screws with a captive plate, so the pressure plate stays under the screw head and won't drop out when you loosen it for re-termination in the field. Housing is black PBT rated UL94 V-0, and the terminal screws are steel with a zinc clear chromate finish. The bottom termination is closed — no through-board pins, so it's strictly a panel-mount block for wire-to-wire or wire-to-busbar connections.
The 0.375" (9.53 mm) pitch provides clearance between adjacent terminals when landing 14 AWG wire. The captive plate on the screw termination is the detail that saves time on site. When you're re-terminating a wire that's worked loose from vibration, the plate doesn't fall out and roll under the panel — you just back the screw off, insert the stripped wire, and torque it down. It accepts 14-22 AWG, so it covers the common control and power wire sizes in a typical panel.