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Siemens SIRIUS 3RW4047-1BB04 Soft Starter

Siemens SIRIUS 3RW4047-1BB04 Soft Starter for motor control.

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ManufacturerSiemens

Part number3RW4047-1BB04

Series SIRIUS 3RW40

Rated Current 106 A

Motor Power 55 kW (at 400 V)

Control Voltage 200-480 V AC

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Smooth Motor Start Reduced Mechanical Stress Energy Savings Overload Protection Compact Design Screw Terminals

Product description

The Siemens 3RW4047-1BB04 is part of the SIRIUS 3RW40 series, designed for smooth starting of three-phase motors. This soft starter has a rated operating current of 106 A at 40°C and is suitable for motors up to 55 kW at 400 V. It operates with a control voltage range of 200-480 V AC and a 24 V AC/DC control input.

This soft starter is ideal for reducing mechanical stress on machinery during startup, improving system reliability, and saving energy by optimizing motor ramp-up. It finds applications in pump systems, fan drives, conveyor belts, and other applications where smooth acceleration is crucial.

Stanlo Automation, a veteran-owned distributor, offers the Siemens 3RW4047-1BB04. We provide reliable access to quality surplus industrial automation parts, ensuring your operational continuity.

Technical specifications

Series	SIRIUS 3RW40
Rated Current	106 A
Motor Power	55 kW (at 400 V)
Control Voltage	200-480 V AC
Control Input	24 V AC/DC
Terminals	Screw
Temperature	40 °C

Common applications

Pump Systems

Fan Drives

Conveyor Belts

Compressors

Machine Tools

General Motor Control

Compatible systems

Three-phase AC motors 200-480V AC control circuits 24V AC/DC control voltage

Also known as

SIRIUS 3RW40 Siemens soft starter

Replaces / compatible with

Designed as a soft starter for three-phase AC motors. Consult Siemens documentation for specific motor compatibility.

Technical note

Expert tip

The integrated braking chopper allows for controlled deceleration, which is crucial for applications like conveyor systems to prevent product damage.

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Frequently asked questions

What is the maximum motor power for the Siemens 3RW4047-1BB04 soft starter?

The Siemens 3RW4047-1BB04 soft starter can handle motors up to 55 kW when operating at 400 V. It is rated for a continuous current of 106 A at 40°C.