Ratings that drive the fit
The 397000102: Rated 18 A per circuit at 300 V — that 18 A is consistent with 12 AWG wire headroom at the clamp, which means the current rating is not the bottleneck on a 12 AWG run; the wire gauge and the contact plating (brass, tin-plated) are what govern usable duty. Tin plating on the clamp steel and the contact shoulder is the standard commercial grade — adequate for permanent installs where reconnect cycles are minimal. Operating range is -40°C to 105°C, and the housing is polyamide (PA66) — fine for most industrial enclosure interiors without active cooling above the upper limit. The side interlocking feature lets multiple blocks gang together at the panel, which is the typical reason a panel builder reaches for this series over a standalone bar.
Sourcing and lifecycle
Active and ROHS3 Compliant per the official listing — no LTB watch item, no cross-reference entry. Quoted-to-order against the BOM quantity; confirm the 45° entry angle against the board keep-out zone before committing — that orientation is the most common mismatch when a panel builder substitutes a horizontal-entry sibling in the same series.