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Siemens 3RW4046-1BB14

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DESCRIPTION: SOFT STARTER, S3, 80A, 45KW/400V, 40 DEGR, AC 200-480V, AC/DC 110-230V


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2 Year warranty

Part Number3RW4046-1BB14
Model #3RW40461BB14
Warranty2 Year
CategorySoft starter
DescriptionAC Semiconductor Motor Starter
Current rating80 A
Power rating45 kW
Derating temperature40 °C
Voltage rating200-480 VAC
Ouput voltage110-230 V AC/DC
Height170 mm
Width70 mm
Depth190 mm
MountingScrew and snap-on mounting

Our Repair Services

MRO Electric repairs CNCs, PLCs, Servo/Spindle Drives, Motors, Amplifiers, VFDs, HMIs, and more, most of which can be repaired in only 3-5 days.

Repair Benefits

MRO can restore your failed 3RW4046-1BB14 to remanufactured condition and save you up to 75% compared to buying new. We offer standard repair pricing to ensure you the best value for your repair.

Our certified technicians use rigorous testing procedures to ensure your parts are restored to fully functioning condition. Our team proudly stands behind all repairs by providing a minimum 2-year warranty.

Our technicians have vast experience with most manufacturers and models. In addition to this 3RW4046-1BB14 we also repair a wide range of other Siemens products, so if you don’t see the model you need, please contact us.

Core Exchange

If you are interested in getting credit for your faulty 3RW4046-1BB14, just let us know, and we can issue you an RMA to send it in as an exchange. Our exchange program provides you with savings and keeps us stocked for the next time you need anything.

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Ask about exchanging your faulty 3RW4046-1BB14 for credit when ordering from MRO Electric

MRO Electric provides a 2-year warranty on every item we sell and repair. We stand behind all of our products and guarantee them for the full 2 years. If there is an issue with any of our products within the warranty period, we will evaluate the unit and repair or replace it under warranty.

Siemens 3RW4046-1BB14 Overview

Siemens 3RW4046-1BB14

The Siemens 3RW4046-1BB14 SIRIUS soft starter represents a technological marvel in the realm of power electronics, designed to facilitate the smooth and efficient operation of 3-phase motors. This soft starter, with a rated current of 80A and a power rating of 45 kW at 400 V, is engineered to provide reliable motor control in a variety of industrial applications. 

Integrated Bypass Contact System for Seamless Operation

The 3RW4046-1BB14 boasts an integrated bypass contact system, ensuring that once the motor reaches its desired speed, the soft starter seamlessly transitions to bypass mode. This feature not only enhances the overall efficiency of the system but also contributes to energy savings by reducing power losses during continuous operation.

Comprehensive Device Protection and Motor Overload Protection

Equipped with intrinsic device protection and motor overload protection, this soft starter ensures the safety and longevity of both the device itself and the connected motor. The device protection features safeguard against faults and abnormalities, while the motor overload protection prevents damage to the motor due to excessive loads.

Adjustable Current Limitation for Customized Control

The 3RW4046-1BB14 provides operators with the flexibility to adjust current limitations according to specific requirements. This feature enables customization of the device's response to varying loads, offering a tailored solution for different industrial scenarios.

Advanced Power Electronics and Thyristor Technology

With thyristors at its core, the soft starter leverages advanced power electronics to control the motor's starting and stopping processes. This not only ensures a smooth and controlled acceleration but also minimizes mechanical and electrical stress on the motor and connected equipment.

Wide Range of Operating Voltages and Frequencies

The soft starter supports a broad range of operating voltages from 200 V to 480 V, allowing for compatibility with various industrial setups. Additionally, it accommodates different operating frequencies (50 Hz to 60 Hz), making it versatile for global applications.

Compact Design and Easy Installation

Featuring a compact design, the 3RW4046-1BB14 is designed for ease of installation. The screw and snap-on mounting method simplifies the setup process, while the device's dimensions (70mm x 170mm x 190mm) make it suitable for installations with space constraints.

User-Friendly Display and Fault Signal Indication

The soft starter includes a red display version for fault signal indication, providing operators with clear feedback about the system's status. This user-friendly feature aids in troubleshooting and maintenance, contributing to overall system reliability.

Robust Mechanical Construction and Environmental Adaptability

Built to withstand challenging industrial environments, the soft starter is constructed with a high degree of insulation (600V). Its compliance with environmental categories ensures reliable operation across a wide range of temperatures, altitudes, and ambient conditions.

Frequently Asked Questions (FAQs) – Siemens 3RW4046-1BB14 SIRIUS Soft Starter

Q1: What is the primary function of the integrated bypass contact system in the 3RW4046-1BB14 soft starter?

The integrated bypass contact system ensures seamless transitions to bypass mode once the motor reaches its desired speed. This feature enhances energy efficiency by reducing power losses during continuous operation.

Q2: How does the adjustable current limitation feature benefit users?

The adjustable current limitation feature allows operators to customize the soft starter's response to varying loads. This flexibility provides a tailored solution for different industrial scenarios, optimizing motor control based on specific requirements.

Q3: Can the 3RW4046-1BB14 soft starter protect connected motors from overloads?

Yes, the soft starter is equipped with motor overload protection, safeguarding the connected motor from damage due to excessive loads. This feature contributes to the longevity and reliability of the motor.

Q4: What kind of power electronics technology does the 3RW4046-1BB14 utilize?

The soft starter employs thyristor technology as the core of its power electronics. This ensures a smooth and controlled acceleration of the motor, minimizing mechanical and electrical stress.

Q5: Is the 3RW4046-1BB14 suitable for use in different global locations with varying operating voltages and frequencies?

Yes, the soft starter supports a wide range of operating voltages (200 V to 480 V) and frequencies (50 Hz to 60 Hz), making it versatile and suitable for global applications.

Q6: How user-friendly is the display on the 3RW4046-1BB14, and how does it assist in troubleshooting?

The soft starter features a user-friendly display with a red fault signal indication. This display provides clear feedback on the system's status, aiding operators in troubleshooting and maintenance.

Q7: What are the dimensions and mounting options for the 3RW4046-1BB14 soft starter?

The soft starter has a compact design with dimensions of 70mm x 170mm x 190mm. It employs a screw and snap-on mounting method for easy installation.

Q8: How does the 3RW4046-1BB14 handle environmental conditions, such as temperature and altitude?

The soft starter is built to withstand challenging industrial environments with a high degree of insulation (600V). It complies with environmental categories, ensuring reliable operation across a wide range of temperatures, altitudes, and ambient conditions.

Q9: Can the 3RW4046-1BB14 be used for motor control in applications with space constraints?

Yes, the soft starter's compact design and easy installation method make it suitable for applications with space constraints.

Q10: Does Siemens provide technical support and documentation for users working with the 3RW4046-1BB14 SIRIUS soft starter?

Yes, Siemens offers comprehensive documentation, user manuals, and technical support to assist users in understanding and utilizing the features of the soft starter. The company is committed to ensuring a positive user experience and successful integration into various industrial applications.

Siemens products are manufactured in Germany and are designed for Automotive, aerospace, power generation, and electronics usage. They come with a 2-year warranty from MRO Electric. We also carry Breakers from other manufacturers such as FANUC and Yaskawa.

Contact Us Today For More Information About Siemens Products

Check out the rest of our Siemens product line. Whether it's using our online instant quote feature, giving us a call at (800) 691-8511, or emailing us at, we strive for customer satisfaction first. This means lower prices and better service for you. For more products like 3RW4046-1BB14, take a look at more from our Breakers line. If your current unit has gone bad, take advantage of our Core Exchange program for the most inexpensive route. You can learn more about this program on our FAQ page here. We offer a repair service on all of our 3RW4046-1BB14 products that keep your downtime to a minimum. To stay up to date on manufacturer news, as well as access any of our datasheets, manuals, or other documentation, we suggest you take a look at our blog.

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