What the 397000104 is
The Molex 397000104 is a 4-position single-level Eurostyle 39700 terminal block rated 18 A per circuit at 300 V, with a 0.200-inch (5.08 mm) pitch and a 45° through-hole orientation that sits angled above the PCB surface rather than flush. The housing is green PA66 (Nylon 6/6), and the contacts are tin-plated brass. Wire termination is a push-button screwless clamp — the operator presses the orange button to open the clamp, inserts the stripped conductor, and releases to lock the wire in place, accepting 12-26 AWG without a ferrule or crimp. Operating temperature range is -40°C to 105°C. The 4-position block carries side interlocking features, meaning multiple units can be mechanically ganged along the bus rail to expand the circuit count without additional mounting hardware — common practice when routing multi-wire loads through a single panel entry point.
What the key ratings mean for the fit
The 18 A per circuit rating is governed by the tin-plated contact interface and the PA66 housing's thermal ceiling — at full load the block is suitable for motor branch circuits, lighting control, and power distribution within the 300 V envelope. The 12-26 AWG wire range covers both the heavy-gauge conductors used in power feeds and the lighter signal wires common in control wiring. Plating is tin, not gold — appropriate for fixed-installation use where frequent reconnect cycling is not a requirement; the housing's 1-level design keeps the footprint compact at 5.08 mm pitch.
Sourcing and compliance
The 397000104 is Active and ROHS3 Compliant per the official record — in normal production and quoted to order against the BOM quantity. No official successor or cross-reference is listed. The green housing and 5.08 mm pitch confirm the variant — match the color and series to the existing BOM line before committing.