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Siemens 6SL3120-2TE21-8AD0

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2 Year warranty

Part Number6SL3120-2TE21-8AD0
TypeAC Drives
Model #6SL31202TE218AD0
Warranty2 Year
DesignDouble motor module
Construction Booksize
Rated Voltage510 ... 720 VDC
Power SupplyDC 24 V -15 % / +20 %
Max Current1.10 A
CoolingInternal Air
Ambient temp32 ... 104 °F
Rated Output Current2 x 18.0 A
Rated pulse frequency4.00 kHz
Output frequency650 Hz (servo control)
Output frequency600 Hz ((Vf control)
Output frequency300 Hz (Vector control)
StandardsCE, cULus
Height14.9 in
Width3.94 in
Depth10.63 in
ProtectionIP20/UL Open type
Safety IntegratedSIL 2 acc. to IEC 61508, PL d acc. to EN ISO 13849-1, Category 3 acc. to EN ISO 13849-1

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 6SL3120-2TE21-8AD0 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 6SL3120-2TE21-8AD0 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 6SL3120-2TE21-8AD0, 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.

  • Shipping Weight : 18lbs

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Ask about exchanging your faulty 6SL3120-2TE21-8AD0 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 6SL3120-2TE21-8AD0 Overview

The 6SL3120-2TE21-8AD0 is a motor module manufactured by Siemens as part of their SINAMICS S120 series. Designed to deliver high-performance control for a variety of industrial applications, this double-motor module offers advanced features and reliable operation. With a DC 600V input, it provides a versatile solution for driving motors in diverse systems. These 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 AC Drives from other manufacturers such as FANUC and Yaskawa.

Siemens, a renowned multinational conglomerate based in Germany, is widely recognized for its expertise in industrial automation and electrical engineering. The company has a long-standing reputation for producing high-quality and innovative products, and the 6SL3120-2TE21-8AD0 is no exception.

The S120 double motor module is a crucial component in Siemens' SINAMICS product line, which focuses on delivering efficient and precise motor control solutions. The module is designed to accommodate two motors, allowing for synchronized operation and optimal performance in various industrial settings.


One of the key features of the 6SL3120-2TE21-8AD0 is its high input voltage rating of DC 600V. This enables the module to handle demanding applications that require robust power delivery. By accepting such a high voltage input, the module can efficiently drive motors in systems that demand significant power levels.

Furthermore, the SINAMICS S120 double motor module incorporates advanced control algorithms and monitoring capabilities to ensure precise and reliable operation. It provides comprehensive motor protection features, such as overcurrent and overvoltage protection, which safeguard the motors from potential damage and enhance system safety.


The module offers flexible connectivity options, allowing for seamless integration into existing automation systems. It supports various communication protocols, including PROFIBUS, PROFINET, and Ethernet/IP, enabling easy integration with other devices and control systems.

In addition to its impressive performance features, the 6SL3120-2TE21-8AD0 is built to withstand harsh industrial environments. It is designed with rugged construction and reliable components, ensuring durability and longevity even in demanding operating conditions.


Siemens' commitment to sustainability is also reflected in the design of the SINAMICS S120 double motor module. With its high energy efficiency and power regeneration capabilities, the module helps optimize energy consumption and reduce overall system costs, making it an environmentally friendly choice.

Overall, the 6SL3120-2TE21-8AD0 motor module from Siemens offers a powerful and versatile solution for industrial motor control. Its high input voltage rating, advanced control features, and robust construction make it suitable for a wide range of applications, including machine tools, conveyor systems, and packaging machinery.

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 6SL3120-2TE21-8AD0, take a look at more from our AC Drives 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 6SL3120-2TE21-8AD0 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.

5 stars

4.9 Overall Satisfaction Rating

Over 1700 Ratings from Actual Customers

Read Our Reviews

Fast delivery and very good service.


Would use again. Received in timely manner.


Very happy with the overall service, delivery, communication and delivery,

Conley Cooke