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Siemens SIRIUS 3RW30 Soft Starter, Size S3

Siemens SIRIUS 3RW30 soft starter, Size S3, 75A, 37kW, 24V DC control.

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ManufacturerSiemens
Part number3RW3045-1AB04
Series SIRIUS 3RW30
Size S3
Rated Current 75 A
Motor Power 37 kW (at 400 V)
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Smooth motor acceleration Reduces inrush current Size S3 rating 75A continuous current 24V DC control voltage Screw terminal connections SIRIUS design

The Siemens SIRIUS 3RW3045-1AB04 is a soft starter designed for smooth acceleration of three-phase induction motors. This Size S3 unit is rated for 75 Amperes and can handle motor loads up to 37 kW at 400 V. It operates with a wide AC supply voltage range of 200-460 V and a control voltage of 24 V DC. The device features screw connections for reliable and secure wiring.

Soft starters like the 3RW30 series are essential for reducing mechanical stress on machinery and electrical inrush currents when starting motors. They are widely used in industrial applications such as conveyor systems, pumps, fans, compressors, and other machinery where controlled motor start-up is required to prevent damage and save energy.

As a veteran-owned surplus parts distributor, Stanlo Automation provides access to quality industrial components like the Siemens 3RW3045-1AB04 soft starter. We ensure you receive reliable equipment to optimize your motor control applications.

SeriesSIRIUS 3RW30
SizeS3
Rated Current75 A
Motor Power37 kW (at 400 V)
Supply Voltage200-460 V AC
Control Voltage24 V DC
ConnectionScrew Terminal
Conveyor systems
Pump control
Fan control
Compressor start-up
Machine tools
Industrial motor applications
Three-phase induction motors Siemens S7 PLCs Industrial control panels Automation systems
Siemens SIRIUS Soft Starter 3RW3045-1AB04 Siemens Motor Starter
This soft starter is part of the Siemens SIRIUS 3RW30 line, providing controlled starting for three-phase motors.
Expert tip
Ensure the control circuit wiring for the 24V DC input is correctly terminated to prevent accidental activation or failure to start.
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What is the control voltage for the Siemens 3RW3045-1AB04 SIRIUS soft starter?
The Siemens SIRIUS 3RW3045-1AB04 soft starter operates with a control voltage of 24 V DC. This allows for integration with standard DC control circuits in industrial automation systems.