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Siemens SIRIUS 3RW44 Soft Starter - 313A (400V)

Siemens SIRIUS 3RW44 soft starter, 313A at 400V.

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ManufacturerSiemens
Part number3RW4445-2BC44
Rated Current (Standard) 313A @ 400V
Rated Power (Standard) 160kW @ 400V
Rated Current (Delta) 542A @ 400V
Rated Power (Delta) 315kW @ 400V
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12-month warranty
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Same-day dispatch
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Worldwide delivery
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Veteran-owned
CAGE: 9NK75
Smooth motor acceleration Reduced mechanical stress Lower inrush current Built-in overload protection Suitable for 3-phase motors

The Siemens SIRIUS 3RW4445-2BC44 is a soft starter designed to control the acceleration of three-phase motors, reducing mechanical stress and electrical power surges. Rated for 400V and 40Β°C, it handles standard loads of 313A and 160kW, with inside-delta connections supporting up to 542A and 315kW. It operates on 200-460V AC and features spring-type terminals for easy connection.

This soft starter is suitable for applications requiring smooth motor start-ups, such as pumps, fans, compressors, and conveyors. It is commonly used in manufacturing plants, water treatment facilities, and HVAC systems where controlled motor acceleration is crucial for system longevity and efficiency. Please note that this is a phased-out product, with the successor being the SIRIUS 3RW5 series.

Stanlo Automation, a veteran-owned distributor of surplus industrial parts, offers this Siemens SIRIUS soft starter. We help you find essential components for your automation needs, even for legacy systems, ensuring operational continuity and cost-effectiveness.

Rated Current (Standard)313A @ 400V
Rated Power (Standard)160kW @ 400V
Rated Current (Delta)542A @ 400V
Rated Power (Delta)315kW @ 400V
Voltage200-460V AC
TerminalsSpring-type
StatusPhased-out
Pump control
Fan control
Conveyor systems
Compressor starting
Material handling
Industrial machinery
Standard three-phase induction motors Control panels Motor control centers
SIRIUS Soft Starter 3RW44 Siemens Motor Starter 3RW4445
This is a phased-out product. The preferred successor is the Siemens SIRIUS 3RW5545-2HA14. It replaces basic motor starters for controlled acceleration.
Expert tip
While this product is phased out, ensure that any new installation or replacement considers the physical and electrical compatibility with the recommended successor model, 3RW5545-2HA14.
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What is the successor to the Siemens 3RW4445-2BC44 soft starter?
The Siemens 3RW4445-2BC44 is a phased-out product. The preferred successor is the SIRIUS 3RW5545-2HA14, which offers updated features and performance for modern motor control applications.