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The Siemens SIRIUS 3RW4422-1BC44 is a high-feature, solid-state soft starter designed for 3-phase asynchronous motors, rated for 29A (
at
) to
(
inside-delta). It operates at
AC with
AC control, offering features like torque control, soft starting/stopping, and PROFIBUS/PROFINET communication, though it is now listed as a phased-out product.
Key Features & Technical Data
- Performance: (inline),(inside-delta) at.
Availability of New Units
New-in-box 3RW4422-1BC44 units are generally available from third-party industrial automation suppliers and resellers rather than direct from Siemens, often listed as surplus or existing stock.
New-in-box 3RW4422-1BC44 units are generally available from third-party industrial automation suppliers and resellers rather than direct from Siemens, often listed as surplus or existing stock.
- New Stock Listings: Units are frequently available on eBay (Search: 3RW4422-1BC44) and specialty resellers like JC-Electronics.
- Condition: Many listings offer "New in Box" (NIB) or "New Sealed" items, often with expedited shipping options from resellers like this eBay seller.
- Alternatives: As this model is phased out, it is frequently replaced by the newer 3RW55/3RW50 series, though the 3RW44 is still widely used in existing systems.
Before purchasing a "new" unit, check if the seller offers a warranty or testing report, as the product is phased out.
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SIEMENS 3RW4422-1BC44 Soft Starter New One ... - eBay
eBay
https://www.ebay.com › ... › PLC Processors
eBay
https://www.ebay.com › ... › PLC Processors
SIEMENS 3RW4422-1BC44 Soft Starter New One Expedited Shipping 3RW4 422-1BC44 ; Controller Platform, Automate ; Est. delivery. Tue, Apr 14 - Fri, Apr 24. From ...Read more
$975.00$60 delivery
3RW4422-1BC44 ✓ 2 year warranty
JC-Electronics
https://www.jc-electronics.com › 3rw4422-1bc44
JC-Electronics
https://www.jc-electronics.com › 3rw4422-1bc44
The 3RW4422-1BC44 operates efficiently within a voltage range of 200-460 V AC and features a 230 V AC control supply. Installation is straightforward thanks to ...Read more
€1,240.00Free delivery14-day returns
SIEMENS 3RW4422-1BC44 AC Semiconductor Motor ...
Rockss Automation
https://rockssautomation.com › products › siemens-3rw4...
Rockss Automation
https://rockssautomation.com › products › siemens-3rw4...
Used. Warranty: 3 months. Module Number: 3RW4422-1BC44. Product Description: SIRIUS soft starter Values at 400 V, 40 °C Standard: 29 A, 15 kW Inside-delta: ...Read more
$888.00
Equipment Manual - 3RW44 soft starters - Support
Siemens
https://support.industry.siemens.com › attachments
Siemens
https://support.industry.siemens.com › attachments
PDF
Jan 10, 2017 — Additional field devices > Switching devices > Motor starters > Direct soft starters > ... The 3RW4422 and 3RW4423 soft starters do not need fans.Read more
3RW4422-1BC44 1PC NEW IN BOX Siemens Soft Starter ...
eBay
https://www.ebay.com › ... › PLC Processors
eBay
https://www.ebay.com › ... › PLC Processors
3RW4422-1BC44 1PC NEW IN BOX Siemens Soft Starter 22KW 3RW4422-1BC44 ; Type. Soft Starter ; Brand. Siemens ; Accurate description. 5.0 ; Reasonable shipping cost.Read more
3RW4422-1BC44 - Siemens Product Information
siemens-info.com
https://www.industry-mobile-support.siemens-info.com › ...
siemens-info.com
https://www.industry-mobile-support.siemens-info.com › ...
SIRIUS soft starter Values at 400 V, 40 °C standard: 29 A, 15 kW Inside-delta: 50 A, 22 kW 200-460 V AC, 230 V AC Screw terminals !!! Phased-out product !!!Read more
3RW4422-1BC44 SIEMENS SIRIUS soft starter Values at ...
Electric Automation Network
https://www.electricautomationnetwork.com › siemens
Electric Automation Network
https://www.electricautomationnetwork.com › siemens
Jan 16, 2022 — Buy 3RW4422-1BC44 SIEMENS SIRIUS soft starter Values at 400 V, 40 °C standard: 29 A, 15 kW Inside-delta: 50 A, 22 kW 200-460 V AC, ...
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People also ask
How to select a soft starter for a motor?
Selection of dol, star-delta and soft starter for motor
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Selection of dol, star-delta and soft starter for motor - SiePortal - Siemens
SiePortal - Siemens
https://sieportal.siemens.com › support › forum › posts
SiePortal - Siemens
https://sieportal.siemens.com › support › forum › posts
How does an electronic soft starter work?
How does a softstarter work? Soft starters use electronic parts to send less power to the motor when it starts. The power then will go in a slow pace until the motor is running at full speed. This helps avoid sudden jolts and power spikes that happen with a direct-on-line start.Oct 8, 2025
What is a soft starter, and where is it used? A complete guide in 2025
Emotron
https://www.emotron.com › guide › what-is-a-softstarter-...
Emotron
https://www.emotron.com › guide › what-is-a-softstarter-...
What is a ramp start motor soft starter?
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Motors. They control the voltage supplied to the motor. And this enables a smooth ramp up to fullMoreMotors. They control the voltage supplied to the motor. And this enables a smooth ramp up to full speed which then reduces stress on the motor. And electrical.
Soft Starters Explained: What They Do and Why You Need Them - YouTube
YouTube
https://www.youtube.com · RSP Supply
YouTube
https://www.youtube.com · RSP Supply
Web results
Data sheet 3RW4422-1BC44 - Support
Siemens
https://support.industry.siemens.com › teddatasheet
Siemens
https://support.industry.siemens.com › teddatasheet
PDF
Jan 4, 2025 — 3RW4422-1BC44. SIRIUS soft starter Values at 400 V, 40 °C standard: 29 A, 15 kW Inside-delta: 50. A, 22 kW 200-460 V AC, 230 V AC Screw ...Read more
Siemens soft starter motor 29kW 3RW4422-3BC44 New Supplier ...
henengindustry.com
https://www.henengindustry.com › siemens-soft-starter-...
henengindustry.com
https://www.henengindustry.com › siemens-soft-starter-...
Rated Power: The 3RW4422-3BC44 soft starter is designed for motors with a rated power range of 150 kW to 315 kW. Current Rating: This soft starter has a rated ...
3RW4422-1BC44 | Soft starters | SIEMENS | SEI
Standard Exchange Industry
https://www.standard-exchange-industry.com › ... › Drives
Standard Exchange Industry
https://www.standard-exchange-industry.com › ... › Drives
For sale on our site, a SIEMENS soft starter reference 3RW4422-1BC44. SIRIUS 3RW .Available from stock! Shipping and delivery in Europe quickly.