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    AI Overview
    SIEMENS 3RW4444-6BC34 SIRIUS AC SEMICONDUCTOR ...
    The Siemens SIRIUS 3RW4446-6BC44 is a 356A–617A (inside-delta) soft starter featuring comprehensive motor protection, including adjustable electronic overload protection, intrinsic device protection, and thermistor motor protection. It prevents motor damage via adjustable current limitation and smooth, torque-controlled starts/stops. 
    Key motor protection features include: 
    • Motor Overload Protection: Electronic, adjustable overload relay built-in.
    • Thermistor Protection: Direct evaluation of PTC thermistor motor protection.
    • Intrinsic Device Protection: Protects the soft starter itself from damage.
    • Adjustable Current Limitation: Limits the starting current to set values, preventing thermal overload of the motor.
    • Inside-Delta Connection: Supports 3-phase connections in delta for enhanced protection and handling of higher power loads (up to 355 kW at 400 V).
    • Optional Protection: Features for evaluation of motor thermal state and external reset.
    • Water Hammer Prevention: Controls soft stops to prevent mechanical damage in pumping applications. 
    This unit (often marked as discontinued/phased out with the 3RW5546-6HA14 as a successor) is designed for heavy-duty industrial applications using 200-460 V AC. 
    • A Technical Overview of Siemens 3rw4446 6bc44 Soft Starter
      Mar 10, 2026 — As part of the SIRIUS 3RW44 series, it delivers precise control over motor starting and stopping, reducing mechanical stress and e...
      Alibaba.com
    • 3RW44466BC44 Datasheet En | PDF - Scribd
      Jan 16, 2026 — The SIRIUS 3RW4446-6BC44 is a soft starter designed for 400 V applications with a maximum current rating of 356 A and a power capa...
      Scribd
    • Data sheet 3RW4446-6BC44
      Dec 15, 2020 — product feature. ○ integrated bypass contact system. Yes. ○ thyristors. Yes product function. ○ intrinsic device protection. Yes. ...
      Quick Time Engineering Inc
    • Data sheet 3RW44 44-6BC44 - ADEGIS
      Sep 21, 2018 — Product feature. ○ integrated bypass contact system. Yes. ○ Thyristors. Yes. Product function. ○ Intrinsic device protection. Yes.
      ADEGIS
    • Product data sheet 3RW4444-6BC44 - RS-Online
      Mar 12, 2013 — • intrinsic device protection. Yes. • motor overload protection. Yes. • evaluation of thermal resistor motor protection. Yes. • re...
      docs.rs-online.com
    • 3RW4446-6BC44 Soft Start by SIEMENS - Radwell International
      Description: * 3RW44466BC44. * DISCONTINUED BY MANUFACTURER - 10/01/2023. * SOFT STARTER. * 356-617 AMP. * 200-460 VAC. * 200-355 ...
      Radwell International
    • A Technical Overview of Siemens 3rw4446 6bc44 Soft Starter
      Mar 10, 2026 — As part of the SIRIUS 3RW44 series, it delivers precise control over motor starting and stopping, reducing mechanical stress and e...
      Alibaba.com
    • 3RW44466BC44 Datasheet En | PDF - Scribd
      Jan 16, 2026 — The SIRIUS 3RW4446-6BC44 is a soft starter designed for 400 V applications with a maximum current rating of 356 A and a power capa...
      Scribd
    • Data sheet 3RW4446-6BC44
      Dec 15, 2020 — product feature. ○ integrated bypass contact system. Yes. ○ thyristors. Yes product function. ○ intrinsic device protection. Yes. ...
      Quick Time Engineering Inc
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    Data sheet 3RW4446-6BC44


    Quick Time Engineering Inc
    https://www.quicktimeonline.com › pdf › siemens
    Quick Time Engineering Inc
    https://www.quicktimeonline.com › pdf › siemens
    PDF
    Dec 15, 2020 — ○ intrinsic device protection. Yes. ○ motor overload protection. Yes. ○ evaluation of thermistor motor protection. Yes. ○ external reset. Yes.Read more
    5 pages

    SIRIUS SOFT STARTER, - 3RW4446-6BC44


    Siemens
    https://support.industry.siemens.com › products › sirius...
    Siemens
    https://support.industry.siemens.com › products › sirius...
    The Simulation Tool for Soft Starters (STS) provides a convenient means of designing soft starters using a simple, quick and easy to-use interface. Entering the ...Read more
    Free delivery

    Wholesale Motor protection features 3RW4446-6BC44, High Quality ...


    henengindustry.com
    https://www.henengindustry.com › motor-protection-feat...
    henengindustry.com
    https://www.henengindustry.com › motor-protection-feat...
    The 3RW4446-6BC44 is a soft starter from Siemens. It is part of the SIRIUS 3RW44 series of compact soft starters designed for starting and stopping ...

    3RW4446-6BC44 ✓ 2 year warranty


    JC-Electronics
    https://www.jc-electronics.com › 3rw4446-6bc44
    JC-Electronics
    https://www.jc-electronics.com › 3rw4446-6bc44
    Brand: Siemens · Supports both standard and inside-delta motor connection for versatile applications · Handles high currents (up to 617 A) and large motors (up to ...Read more
    €6,975.00 · In stock · 4.6(228) · Free delivery · 14-day returns

    3RW4446-6BC44 Siemens | SIRIUS Soft Starter 400V ...


    WiAutomation
    https://us.wiautomation.com › siemens › 3RW44466BC...
    WiAutomation
    https://us.wiautomation.com › siemens › 3RW44466BC...
    Description: SIRIUS soft starter Values at 400 V, 40 °C Standard: 356 A, 200 kW Inside-delta: 617 A, 355 kW 200-460 V AC, 230 V AC Screw terminals.Read more
    EGP 334,652.31 · 14-day returns
    Missing: features ‎| Show results with: features

    Siemens 3RW4446-6BC44 SOFT START,315A,1


    Crawford Electric Supply
    https://www.crawfordelectricsupply.com › detail › siem...
    Crawford Electric Supply
    https://www.crawfordelectricsupply.com › detail › siem...
    Siemens 3RW4446-6BC44 SOFT START,315A,1 ; Amperage. 356 Amp ; Connection Type. Busbar Connection,Screw-Type Terminals ; Number of Phases. 3 Phase ; Number of Poles.Read more
    Missing: features ‎| Show results with: features

    Manual - 3RW44 Soft Starters


    ADEGIS
    https://adegis.com › media › asset
    ADEGIS
    https://adegis.com › media › asset
    PDF
    Dec 9, 2019 — Motor protection tripping characteristics: 3RW44 with symmetry ... The soft starter features internal run-up recognition. If the device ...Read more
    292 pages

    3RW4446-6BC44 Soft Start by SIEMENS


    Radwell International
    https://www.radwell.com › Buy › 3RW4446-6BC44
    Radwell International
    https://www.radwell.com › Buy › 3RW4446-6BC44
    3RW4446-6BC44 Drives from SIEMENS In Stock, Order Now! Same Day Shipping, 2-Year Warranty, Radwell Repairs - - 10/01/2023, SOFT STARTER, 356-617 AMP, ...
    $5,179.71 · In stock · $49.76 delivery · 30-day returns

    Manual SIRIUS Soft Starter 3RW44 Edition 10/2010


    Siemens
    https://cache.industry.siemens.com › att_107541
    Siemens
    https://cache.industry.siemens.com › att_107541
    PDF
    ... Protection of ... The SIRIUS 3RW44 soft starter is an electronic motor control device for optimized starting and stopping of 3-phase asynchronous motors.Read more
    262 pages
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    Web results

    Motor Starters, Soft Starters and Load Feeders


    EandM
    https://www.eandm.com › Controls › IC14_Sect07
    EandM
    https://www.eandm.com › Controls › IC14_Sect07
    PDF
    Overview. The SIRIUS 3RW30 soft starters reduce the motor voltage through variable phase control and increase it in ramp-like mode.Read more
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