3-Circuit Barrier Block for Panel Wiring
The 387700103: It accepts 14-22 AWG wire with 6 wire entries — two per circuit, one on each side of the screw.
Construction and Mounting
The dual-wall barrier separates adjacent circuits with a full-height wall on both sides of the screw — better creepage than a single-wall block for the 300V rating. The terminal screw is steel with a zinc, clear chromate finish, which resists corrosion in a cabinet environment without plating flake issues. The bottom termination is closed, meaning no through-hole pins or solder tails — all connections are made at the screw terminals on top. Mounting is chassis or panel via the integral flange. The block does not snap onto DIN rail — it bolts down. That makes it a direct replacement for older barrier strips in existing panels where the hole pattern is already drilled.