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Siemens Soft Starter 3RW40
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Siemens Soft Starter 3RW40

Manufacturer: Siemens
Model: SIRIUS 3RW40
Power Range: 5.5-250kW (7.5-335hp)
Supply Voltage: 200-600V AC (3-phase)
Protection Rating: IP20
Application: Industrial motor control
Key Sourcing Insight: A compact and reliable Siemens soft starter with smooth operation, supported by direct sourcing and sufficient stock.

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Product Description

The Siemens SIRIUS 3RW40 soft starter is designed for smooth starting and stopping of three-phase asynchronous motors, covering a power range from 5.5kW to 250kW (7.5hp to 335hp) at 40°C. Operating at 200-600V AC (3-phase), it features two-phase control, integrated motor overload protection, and six potentiometers for easy commissioning. Suitable for applications like conveyors, pumps, and fans in industries such as manufacturing and mining, it supports explosion-proof motors with "increased safety" (EEx e) and operates reliably up to 60°C with derating.

Supply Advantage & Procurement Notes

The Siemens 3RW soft starter is well known for its compact design and smooth start/stop performance.

We source directly from upstream channels, ensuring reliable supply, sufficient stock, and more competitive pricing.

Compact Design Smooth Start / Stop Direct Sourcing Advantage

Standard Features

  • Power Range: 5.5-250kW (7.5-335hp)

  • Voltage Compatibility: 200-600V AC (3-phase)

  • Protection: IP20, optional thermistor motor protection

  • Safety: Integrated motor overload protection

  • Control: Six potentiometers for commissioning

  • Durability: Operates up to 60°C with derating

Technical Specifications

 

ModelRated Power (kW/hp)Supply VoltageContinuous Output Current (A)Control VoltageFeatures
3RW40241BB045.5kW / 7.5hp200-480V12.5A24V AC/DCScrew terminals
3RW40271BB0415kW / 20hp200-480V32A24V AC/DCScrew terminals
3RW40371BB0437kW / 50hp200-480V72A24V AC/DCScrew terminals
3RW40471BB0490kW / 120hp200-480V180A24V AC/DCScrew terminals
3RW40241BB057.5kW / 10hp400-600V12.5A24V AC/DCScrew terminals
3RW40261BB0511kW / 15hp400-600V25A24V AC/DCScrew terminals
3RW40281BB0518.5kW / 25hp400-600V38A24V AC/DCScrew terminals
3RW40381BB0545kW / 60hp400-600V80A24V AC/DCScrew terminals
3RW40471BB05110kW / 150hp400-600V180A24V AC/DCScrew terminals
3RW40272BB0418.5kW / 25hp200-480V32A110-230V AC/DCScrew terminals
3RW40372BB0445kW / 60hp200-480V72A110-230V AC/DCScrew terminals
3RW40472BB04110kW / 150hp200-480V180A110-230V AC/DCScrew terminals
3RW40242BB057.5kW / 10hp400-600V12.5A110-230V AC/DCSpring terminals
3RW40372BB0545kW / 60hp400-600V72A110-230V AC/DCSpring terminals
3RW40472BB05110kW / 150hp400-600V180A110-230V AC/DCSpring terminals
3RW40282BB1422kW / 30hp200-480V38A110-230V AC/DCScrew terminals
3RW40472BB15132kW / 175hp400-600V180A110-230V AC/DCScrew terminals
3RW40472TB04110kW / 150hp200-480V180A24V AC/DCScrew terminals, Thermistor
3RW40472TB05132kW / 175hp400-600V180A24V AC/DCScrew terminals, Thermistor

 

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