3RW3047-1BB04

The Siemens SIRIUS 3RW3047-1BB04 soft starter, with a 3RW30 basic model S3 frame, has a rated current of 106A and a 400V rating, suitable for 55kW three-phase motors. The main circuit operates at AC200-480V, while the control voltage is 24V AC/DC. It features a built-in bypass contact system and is suitable for large motor applications using PLC standard 24V control circuits.

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Product Positioning

The 3RW3047-1BB04 is a Siemens SIRIUS 3RW30 basic soft starter. The S3 frame is compatible with a rated current of 106A and a 55kW high-horsepower motor at 400V. It uses a 24V AC/DC control voltage.

Core Product Advantages and Features

High current S3 chassis

With a rated current of 106A, it can be used with a 55kW high-horsepower three-phase motor at 400V, making it suitable for heavy-duty equipment.

24V standard control voltage

The control voltage is 24V AC/DC, which can be directly matched with PLC output modules, eliminating the need for additional voltage conversion.

Built-in bypass contact system

After startup, it automatically switches to bypass operation to reduce long-term heat loss of semiconductor components.

Screw terminal wiring

The standard screw terminal design makes field wiring and maintenance more convenient.

project	Specification
Product Series	SIRIUS 3RW30 Basic Model
Frame size	S3
Rated operating current Ie (40°C)	106 A
Corresponding motor power (400V)	55 kW
Main circuit rated voltage	AC 200-480V
Control voltage	24V AC/DC
Wiring method	Screw terminals
Bypass function	Built-in bypass contact system

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