Siemens SIRIUS 480V 250A 24V screw soft starter

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Product details

SIRIUS Soft Starter 200-480 V 250 A, AC/DC 24 V screw terminals, SIRIUS 3RW55 High Performance soft starter for demanding applications requiring smooth starting and stopping of three-phase asynchronous motors. It allows for stepless starting, reduces current peaks, avoids voltage fluctuations during startup, relieves the power supply network, decreases mechanical stress on the drive, and offers significant space and wiring savings compared to star-delta starters and frequency converters, with maintenance-free switching and very easy handling. The integrated bypass enables a very compact design, saves energy, and ensures lower heating in the control cabinet. Intelligent monitoring functions protect the soft starter from overheating and the motor from overload. Additionally, you can limit the current during startup to an adjustable maximum value. Thanks to three-phase control, it is particularly suitable for large motor powers and root-3 circuits. The innovative torque control ensures optimal motor startup. Simple and quick commissioning is possible through auto-parameterization or an application assistant. Predictive maintenance planning is facilitated by condition monitoring. A detachable HMI with a color display provides clear measurement and diagnostic displays. Global approvals (e.g., IEC and UL/CSA) are available. The High Performance soft starters 3RW55 are available for networks up to 690 V in a power range up to 560 kW with 24 V or 110-250 V control supply voltages, consistently featuring screw and spring terminals. An analog output and thermistor motor protection are standard components of the High Performance soft starters. Optional plug-in communication modules allow connection via PROFINET, PROFIBUS, and Modbus TCP. The built-in HMI module can also be mounted on the control cabinet door. The soft starters 3RW55 replace the proven series 3RW44. SIRIUS 3RW5 soft starters - as flexible as your task.

Key specifications

Country of origin
Czech Republic
Motor control type
Soft starter
Item number
18542839

General information

Manufacturer
Siemens
Category
Motor controllers
Manufacturer no.
3RW5544-6HA04
Release date
2.2.2022
External links

Motor control features

Motor control type
Soft starter
rated current
250 A
Rated voltage
480 V
Protection type (IP code)
IP20

Origin

Country of origin
Czech Republic

Voluntary climate contribution

CO₂-Emission
Climate contribution

30-day right of return
24 Months Warranty (Bring-in)

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