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Siemens SIRIUS 3RW30 Soft Starter - S3, 106A

Siemens SIRIUS S3 Soft Starter, 106A, 55kW, 200-480V AC.

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ManufacturerSiemens

Part number3RW3047-2BB04

Series SIRIUS

Type Soft Starter

Size S3

Rated Operational Current 106A

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Smooth motor starting Reduced inrush current S3 size Spring-type terminals SIRIUS modular system 200-480V AC main voltage

Product description

The Siemens 3RW3047-2BB04 is a SIRIUS soft starter with an S3 size rating, designed for smooth and controlled motor starts. It has a rated operational current of 106A and can handle motor ratings up to 55kW at 400V. The device operates over a voltage range of 200-480V AC and features 24V AC/DC spring-type terminals for its control circuit.

This soft starter is crucial for reducing mechanical stress on machinery and electrical inrush current when starting three-phase induction motors. Applications include pump systems, fans, compressors, and conveyor systems where smooth acceleration prevents jolts and extends equipment life.

Stanlo Automation offers a wide selection of surplus industrial components, including Siemens SIRIUS soft starters like the 3RW3047-2BB04. Secure your critical spare parts from us to ensure reliable operation and minimize potential production disruptions.

Technical specifications

Series	SIRIUS
Type	Soft Starter
Size	S3
Rated Operational Current	106A
Max Motor Power	55kW @ 400V
Control Voltage	200-480V AC
Control Terminals	24V AC/DC Spring-Type

Common applications

Pump control

Fan control

Compressor starting

Conveyor systems

Material handling

Machine tools

Compatible systems

Three-phase induction motors PLC control systems Siemens SIRIUS motor control components

Also known as

3RW30472BB04 Siemens S3 Soft Starter SIRIUS 106A Soft Starter

Replaces / compatible with

The Siemens 3RW3047-2BB04 replaces direct-on-line starters in applications where soft starting is required to reduce mechanical shock and electrical stress. It is part of the broader SIRIUS motor starter family.

Technical note

Expert tip

Ensure the ambient temperature is within the specified operating range (40°C) for the full 106A rating; derating is required above this temperature.

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Frequently asked questions

What is the control voltage for the Siemens 3RW3047-2BB04 soft starter?

The Siemens 3RW3047-2BB04 SIRIUS soft starter uses 24V AC/DC for its control circuit. It features spring-type terminals for easy and secure wiring of the control voltage.