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Siemens SIRIUS 3RW40 Soft Starter | 106A | 55kW | 200-480V AC

Siemens SIRIUS 3RW40 Series Soft Starter 106A 55kW.

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ManufacturerSiemens

Part number3RW4047-2BB14

Series SIRIUS 3RW40

Rated Operational Current 106 A

Motor Power 55 kW (at 400V)

Control Voltage 200-480 V AC

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Soft Start Functionality 106A Rating 55kW Motor Capacity Spring-Type Terminals SIRIUS 3RW40 Series Reduced Mechanical Stress

Product description

The Siemens SIRIUS 3RW4047-2BB14 is a Size S3 soft starter designed for smooth acceleration of three-phase asynchronous motors. It has a rated operational current of 106A and can control motors up to 55kW at 400V. The control voltage range is 200-480V AC, and it features convenient spring-type terminals for quick and secure connections.

This soft starter is essential for applications where controlled motor startup is required to reduce mechanical stress, prevent voltage dips, and improve system efficiency. It is widely used in conveyor systems, pump controls, fan drives, and other industrial machinery where soft starting is beneficial.

Stanlo Automation, a veteran-owned surplus distributor, provides access to reliable industrial components like the Siemens 3RW4047-2BB14. We ensure our customers receive quality products at competitive prices, helping to maintain operational efficiency and reduce downtime.

Technical specifications

Series	SIRIUS 3RW40
Rated Operational Current	106 A
Motor Power	55 kW (at 400V)
Control Voltage	200-480 V AC
Terminals	Spring-type
Size	S3

Common applications

Conveyor Systems

Pump Controls

Fan Drives

Industrial Machinery

Motor Acceleration

Material Handling

Compatible systems

Compatible with three-phase asynchronous motors and various industrial control systems.

Also known as

Siemens Soft Starter 106A SIRIUS 3RW40 Series Motor Soft Starter

Replaces / compatible with

Replaces direct-on-line starters where soft start is required. Compatible with many industrial motor control panels and systems.

Technical note

Expert tip

Ensure proper heat dissipation by maintaining adequate spacing between multiple 3RW40 units when installed in a control cabinet.

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Frequently asked questions

What is the control voltage range for the Siemens 3RW4047-2BB14 SIRIUS soft starter?

The Siemens 3RW4047-2BB14 SIRIUS soft starter operates with a control voltage range of 200-480V AC.