Ask our team:
  • Phone: +86 181 0690 9650
  • E-Mail info@apterpower.com
  • Lifecycle status

    Discontinued / Obsolete by OEM
    Apter Power offers quotations, official documentation, sourcing assistance and soft-starter replacement matching for Siemens 3RW4075-6BB44. Availability is confirmed upon inquiry.

3RW4075-6BB44

/ 4.9
1001 reviews | Need a Specific Revision?
Siemens 3RW4075-6BB44 is a SIRIUS S12 soft starter for controlled starting of standard three-phase motors, combining integrated bypass, adjustable current limitation and motor protection.
In Stock
Ships by Tuesday, September 29
Fast Shipping Available
Get a quick price for 3RW4075-6BB44
Quantity
*E-mail
Company
*Mobile
*Content
Upload (gif, jpg, jpeg, png, bmp, doc, docx, xls, xlsx, ppt, pdf, csv)

Technical specifications for 3RW4075-6BB44

  • Manufacturer:
    Siemens
  • Part Number:
    3RW4075-6BB44
  • Product Family:
    Siemens
  • Product Type:
    SIRIUS S12 Soft Starter
  • Stock:
    1
  • Device size:
    S12
  • Rated operational current:
    356 A at 40 °C
  • Motor output:
    200 kW at 400 V
  • Operating voltage:
    200–460 V AC
  • Control supply voltage:
    230 V AC
  • Operating frequency:
    50–60 Hz
  • Main-circuit connection:
    Busbar connection
  • Auxiliary/control connection:
    Screw-type terminals
  • Front protection:
    IP00; IP20 with cover
  • Integrated bypass:
    Yes
  • Weight:
    19.84 lbs (9 kg)
  • Estimated shipping dimensions:
    Device dimensions (W × H × D): 160 × 230 × 278 mm. Shipping dimensions: 321 × 343 × 221 mm.
  • Tariff Code:
    85371098 (Siemens Commodity Code)
  • Country of origin:
    Czech Republic
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Uses Functions Install

Features:

  • SIRIUS 3RW40 soft starter in device size S12 for controlled starting of standard-circuit three-phase motors.
  • Rated 356 A at 40 °C and 200 kW at 400 V, with a 200–460 V AC main circuit and 230 V AC control supply.
  • Integrated bypass contacts, adjustable current limitation, electronic motor-overload protection and intrinsic device protection.
The Siemens 3RW4075-6BB44 is configured for controlled motor starting where reduced starting current and mechanical stress are required.

Busbar connections serve the main circuit, while screw-type terminals are provided for auxiliary and control circuits; external reset supports control-panel integration.

Siemens records this soft starter as discontinued and identifies 3RW5075-6AB14 as the preferred successor. Motor rating, voltage, control supply, mounting space and protection requirements should be confirmed before replacement.

Availability is subject to Apter Power's current inventory and sourcing confirmation.
Siemens 3RW4075-6BB44 SIRIUS S12 Soft Starter Manuals, Datasheets, LinkImportant Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Siemens 3RW4075-6BB44 SIRIUS S12 Soft Starter Specs

General

  • ManufacturerSiemens
  • Model3RW4075-6BB44
  • ConditionNew Original ready stock
  • Product FamilySIRIUS 3RW40 Soft Starters
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Motor-starting applications

  • Standard circuits: controlled starting of three-phase motors.
  • Soft acceleration: reduced starting torque through adjustable ramp settings.
  • Current limitation: adjustable control of motor starting current.
  • Fixed-speed operation: the integrated bypass carries current after ramp-up.

Integrated functions

  • Integrated bypass contact system.
  • Thyristor-based soft-start control.
  • Adjustable current limitation.
  • Electronic motor-overload protection.
  • Intrinsic device protection.
  • External reset function.

Installation data

  • Main circuit: busbar connection.
  • Auxiliary and control circuits: screw-type terminals.
  • Device dimensions: 160 × 230 × 278 mm (W × H × D).
  • Ambient range: -25 to +60 °C, with rated-current derating above 40 °C.
  • Front protection: IP00 or IP20 when the cover is fitted.
Description
The Siemens 3RW4075-6BB44 is a SIRIUS S12 soft starter rated at 356 A at 40 °C and 200 kW at 400 V in a standard circuit. It operates from a 200–460 V AC main circuit at 50–60 Hz and uses a 230 V AC control supply for controlled starting of three-phase motors.

Its integrated bypass contact system reduces losses after ramp-up, while adjustable current limitation, electronic motor-overload protection, intrinsic device protection and external reset support controlled motor starting and device protection.

The S12 device uses a busbar connection for the main circuit and screw-type terminals for auxiliary and control circuits. Device dimensions are 160 × 230 × 278 mm, the specified operating ambient range is -25 to +60 °C, and front protection is IP00 or IP20 when the cover is fitted.

Siemens records the product as discontinued since 1 October 2023 and identifies 3RW5075-6AB14 as the preferred successor. Confirm motor rating, voltage, control supply, connections, mounting space and protection requirements before replacement.
Alternative Names
3RW4075 6BB44 3RW40756BB44 3RW 4075 6BB44 Siemens 3RW4075 6BB44 SIE 3RW40756BB44 SIRIUS S12 soft starter 356 A Siemens S12 200 kW soft starter SIRIUS 3RW40 size S12 starter
Technical notes
Siemens 3RW4075-6BB44 is a SIRIUS S12 soft starter rated 356 A at 40 °C and 200 kW at 400 V, with a 200–460 V AC main circuit and 230 V AC control supply. Siemens lists it as discontinued and names 3RW5075-6AB14 as the preferred successor; verify application and installation requirements before replacement.
Exceptional Service

Our Mission

  • 100% Satisfaction

    We believe expertise is priceless. With over 20 years of experience, and top engineers on staff, we can help you solve or avoid problems that threaten your business.
  • Trust Guaranteed

    Not only do we have a vast inventory, our team makes sure every piece of equipment is in working condition. Your purchases are also backed by our Warranty.
  • Expertise

    Time is money, especially when your equipment is down. We work quickly to get your equipment on its way so you can get it back up and running.

FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is Siemens 3RW4075-6BB44?
It is a Siemens SIRIUS S12 soft starter for standard three-phase motor circuits, rated 356 A at 40 °C and 200 kW at 400 V.
What are the main electrical ratings of 3RW4075-6BB44?
The rated operational current is 356 A at 40 °C, and the motor output rating is 200 kW at 400 V in a standard circuit.
Which supply voltages does this soft starter use?
The main operating voltage is 200–460 V AC at 50–60 Hz, and this variant uses a 230 V AC control supply.
What applications is 3RW4075-6BB44 designed for?
It is intended for controlled starting of standard three-phase motors where soft acceleration and adjustable current limitation are required.
Is 3RW4075-6BB44 still available from Siemens?
No. Siemens lists the product as discontinued since 1 October 2023 and no longer available from Siemens.
Can 3RW5075-6AB14 directly replace 3RW4075-6BB44?
Siemens names 3RW5075-6AB14 as the preferred successor, but this does not establish direct drop-in compatibility. Verify motor rating, voltage, control supply, connections, mounting space and protection requirements.
Where can I find the 3RW4075-6BB44 Datasheet?
The model-specific 3RW4075-6BB44 Datasheet is available as an internal Apter-hosted PDF in the Manuals tab.
How can I request a quotation for 3RW4075-6BB44?
Send the complete model, required quantity and application requirements to info@apterpower.com or call +86 18106909650.