196 A at 40 °C — the derating curve matters
The 3RW4434-2BC34: That 40 °C ceiling is the reference point — above it, the continuous current drops by about 12 % per 10 °C rise, so a panel running at 50 °C ambient loses 23 A of headroom. Adjustable current limitation and built-in motor overload protection let it serve as both the soft-start device and the overload relay in one package — no separate thermal bimetallic needed downstream. The 8 % minimum load setting means it can start lightly loaded conveyors or pumps without tripping on undercurrent.
Inside-delta wiring and mounting flexibility
Supports inside-delta circuit configuration, which reduces the current through the thyristors to 58 % of the line current — useful for retrofitting into existing delta-wound motor circuits where the soft starter sits in the delta legs rather than the supply lines. The screw-fixing mount accepts a vertical surface with ±90° rotation and ±22.5° tilt front-to-back, so it fits enclosures where the backplane is not perfectly plumb. Main circuit connection uses busbar (for high current) or cable lugs: stranded 25…120 mm², finely stranded 16…95 mm², or 4…250 kcmil. The 270 mm depth means it needs a 300 mm deep enclosure minimum for cable bending radius.
Compliance documentation includes pollution degree 3 per IEC 60947-4-2 (conductive pollution typical in industrial panels), 50…60 Hz operating frequency, and a 500 m maximum wire length from the soft starter to the motor — beyond that, voltage drop on starting may require a larger unit or a line reactor.