The Siemens 3RW4446-6BC35 is a SIRIUS soft starter rated 617 A at 40 °C, with an insulation voltage of 690 V and operating frequency of 50 to 60 Hz. It includes motor overload protection and adjustable current limitation, and supports inside-delta circuit wiring. Rated current derates to 546 A at 50 °C and 485 A at 60 °C — plan your panel ambient accordingly. The 617 A figure governs the motor full-load current it can start across the line.
Mounts via screw fixing on a vertical surface, rotatable ±90° and tiltable ±22.5° front-to-back. Clearances: 100 mm above, 75 mm below, 5 mm at the sides. Dimensions are 210 mm wide, 230 mm high, 298 mm deep — fits a standard enclosure backplate with room for cable bends. Main circuit wiring accepts stranded 70 to 240 mm² or busbar connection; auxiliary contacts take 2x (0.5 to 2.5 mm²) solid or 2x (20 to 14 AWG). Maximum wire length to the motor is 500 m.