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The Siemens SIRIUS 3RW4426-3BC44 is a high-feature, compact soft starter designed for 3-phase induction motors, providing smooth acceleration/deceleration and reduced electrical/mechanical stress. Key Specs:
(
) at
,
, and
control voltage, featuring screw terminals. Note: This is a phased-out product; the preferred successor is the 3RW5526-3HA14.
Key Features & Details
- Performance: Enables soft starting and soft stop with integrated bridging contacts to minimize power losses.
- Protection: Includes extensive motor protection (temperature sensor settings, overload) and diagnosis features.
- Applications: Ideal for high-feature applications, preventing voltage fluctuations and reducing mechanical load.
- Communication: Supported by PROFINET or PROFIBUS via optional modules.
- Replacement Notice: As of 2026, this item is frequently sold as new old stock or third-party inventory, with 3RW55 series recommended by manufacturers as the active replacement.
Ensure compatibility with existing motor systems by checking the current 3RW55 series if a direct replacement is unavailable.
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3RW4426-3BC44 NEW SIEMENS ...
eBay
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3RW4426-3BC44 NEW SIEMENS 3RW4426-3BC44 SIRIUS Soft starter 37 kW 3RW44263BC44 ; Quantity. 3 available ; Item number. 365926019474 ; Brand. Siemens ; Est. delivery.Read more
Siemens 3RW4426-3BC44
IndustrialZone
https://www.industrialzone.com › 522307-siemens-3rw4...
IndustrialZone
https://www.industrialzone.com › 522307-siemens-3rw4...
SIRIUS soft starter Values at 400 V, 40 °C Standard: 77 A, 37 kW Inside-delta: 133 A, 75 kW 200-460 V AC, 230 V AC spring-type terminals. Manuals.Read more
$2,881.78Free delivery over $50014-day returns
Siemens soft starter 3RW4426-3BC44 77kW Low soft starter ...
henengindustry.com
https://www.henengindustry.com › siemens-soft-starter-3...
henengindustry.com
https://www.henengindustry.com › siemens-soft-starter-3...
It designed to control the acceleration and deceleration of three-phase induction motors in order to reduce electrical stress on the motor and the connected ...
1PC SIEMENS Soft starter 3RW4426-3BC44 new
eBay
https://www.ebay.com › ... › Reduced Voltage/Soft Starters
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This item is no longer available. ; Ended ; $2,088.00$2,088.00 ; Tue, Apr 07, 08:31 PMTue, Apr 07, 08:31 PM.
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
The SIRIUS 3RW44 soft starter is an electronic motor control device for optimized starting and stopping of 3-phase asynchronous motors. The manual describes ...Read more
3RW4426-3BC44 Siemens | SIRIUS Soft Starter 77A, 133A ...
WiAutomation
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WiAutomation
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Description: SIRIUS soft starter Values at 400 V, 40 °C Standard: 77 A, 37 kW Inside-delta: 133 A, 75 kW 200-460 V AC, 230 V AC spring-type terminals.Read more
$1,540.7714-day returns
3RW4426-3BC44 soft starter 77A 37KW 400V screw terminals
Alibaba.com
https://www.alibaba.com › ... › Motor Starters
Alibaba.com
https://www.alibaba.com › ... › Motor Starters
48 V · Rated Voltage. 10 kW(13.41hp) ; 60 Hz. Frequency. Soft Starter ; Overload Protection. Protection. IP54.
1PC SIEMENS Soft starter 3RW4426-3BC44 new
eBay
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eBay
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Find many great new & used options and get the best deals for 1PC SIEMENS Soft starter 3RW4426-3BC44 new at the best online prices at eBay!
3RW4426-3BC44 SIEMENS SIRIUS soft starter Values at ...
Electric Automation Network
https://www.electricautomationnetwork.com › siemens
Electric Automation Network
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Jan 16, 2022 — Description: SIRIUS soft starter Values at 400 V, 40 °C standard: 77 A, 37 kW Inside-delta: 133 A, 75 kW 200-460 V AC, 230 V AC spring-type ...Read more
14-day returns
3RW4426-3BC44 - Siemens
PLC Hardware
https://www.plchardware.com › Products › SM-3RW44...
PLC Hardware
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Siemens 3RW4426-3BC44 sirius soft starter, values with 400 v, 40 deg., standard: 77a, 37kw, inside-delta circuit 3: 133a, 75kw, 200-460 v ac 4011209627048.
$3,669.00Out of stock