99 A at 40 °C — thermal derating and panel fit
The 3RW4425-1BC46: That derating curve is the first thing to check against your enclosure's internal temperature rise — a panel running at 50 °C knocks 11 A off the continuous rating. Insulation voltage is 690 V, so it sits comfortably on 400 V or 480 V systems with headroom for transient spikes. Pollution degree 3 per IEC 60947-4-2 means it's rated for industrial environments where conductive dust or humidity is present — no derating needed for typical factory-floor conditions.
Integrated bypass and inside-delta wiring
An integrated bypass contact system switches the thyristors out after start, eliminating semiconductor conduction losses during run. That keeps the panel cooler and reduces the heat load on adjacent components. Inside-delta circuit wiring is supported — connect the soft starter in the delta legs of a six-lead motor to reduce the line current the unit sees. Minimum load is 8 %, so it handles lightly loaded starts like unloaded conveyors or pumps without tripping.
Mounting and wiring constraints
Screw fixing to the mounting surface. Dimensions: 270 mm deep, 170 mm wide, 192 mm tall. Clearance: 100 mm above, 75 mm below, 5 mm at the sides — the side gap is tight, so plan for airflow and cable bending radius. Auxiliary and control circuit terminals are screw-type. Maximum motor cable length is 500 m — beyond that, reflected wave voltage spikes may stress the motor insulation.