What it is and where it fits
The 391002504 is a 4-circuit Eurostyle barrier terminal strip rated 63 A per circuit at 600 V, built around a 0.591-inch (15.00 mm) pitch with an enclosed barrier and top-screw termination. It mounts direct to the chassis or panel and accepts 6-14 AWG solid or stranded wire — eight wire entries total across the two rows. The PA66 housing carries a UL94 V-0 flammability rating and operates from -40°C up to 105°C, so it covers the thermal spread of most industrial enclosures.
How it sizes against the 2-circuit member
The 0391002502 — the 2-circuit sibling of this series — shares the same 0.591-inch pitch, the same 63 A current rating, the same 600 V, the same zinc-plated steel hardware, and the same ROHS3 status. The bolt pattern is identical, so the panel cutout matches.
Sourcing and compliance
The zinc-plated steel terminal screws grip the full 6-14 AWG range without a ferrule on solid wire; stranded 6-8 AWG benefits from a ferruled termination to prevent strand lift under the screw head.