3RW4435-6BC45

The Siemens 3RW4435-6BC45 soft starter features a rated voltage of 400-600V AC, a standard wiring rating of 117A, an internal delta wiring rating of 203A, and a 230V AC control power supply. Its compact size makes it suitable for reduced-voltage starting applications for small and medium-sized motors.

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Siemens 3RW4435-6BC45 soft starter physical appearance image

Product Positioning

The SIRIUS 3RW4435-6BC45 is a soft starter in the 3RW44 series with a smaller current rating, applicable to a voltage range of 400-600V. It is suitable for small and medium-sized three-phase motors to achieve smooth start-stop control in confined spaces.

Core Product Advantages and Features

Miniaturized mechanism

Its compact size of 170x200x270mm makes it suitable for integrated installation in distribution panels or machine rooms with limited space.

Three-stage temperature rating markings

Rated current data are provided for 40, 50, and 60°C respectively, making it easy to select the right model based on the actual ambient temperature.

Sufficient insulation withstand voltage

With a rated insulation voltage of 690V, it still maintains sufficient safety margin under higher voltage power grid conditions.

Inner Triangle Capacity Improvement

After switching to the internal delta wiring, the current can reach 203A, which is suitable for higher power motors without changing the model.

project	Specification
model	3RW4435-6BC45
Rated operating voltage	400 ... 600 V AC
Standard wiring rated current (50°C)	117 A
Standard wiring rated current (40°C)	134 A
Rated current (50°C) for internal delta connection	203 A
Control power supply voltage	230 V AC, 50/60 Hz
Insulation voltage	690 V
Motor power (400V, standard wiring)	75 kW
Motor power (500V, standard wiring)	90 kW
Motor power (460/480V, 50°C standard wiring)	75 hp
Main circuit wiring method	busbar connection
Enclosure protection rating	IP00, IP20 after covering
External dimensions (width x height x depth)	170 x 200 x 270 mm

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3RW4435-6BC35

The Siemens 3RW4435-6BC35 soft starter features a rated voltage of 400-600V AC, a standard wiring rating of 117A, an internal delta wiring rating of 203A, and a 115V AC control power supply. It is suitable for reduced-voltage starting of small and medium-sized motors with higher voltage levels.