Receive a Text Quote
We will send you price and availability shortly
Invalid number. Please call (800) 691-8511
Looking for a fast quote? Click here, and we'll text you.

2-year Warranty

Same Day Shipping

Siemens 6SL3120-1TE21-8AA4

2 ratings

Select Condition


2 in stock


2 in stock


Request a formal quote

  • Ships Today
  • 2 Year Warranty
  • Free Shipping
Part Number6SL3120-1TE21-8AA4
TypeAC Drives
Model #6SL31201TE218AA4
Warranty2 Year
DestinationMotor module
Rated DC link voltageDC 510 ... 720 V
Power SupplyDC 24 V -15 % / +20 %
CoolingInternal air cooling
Rated output current18.0 A
Rated base load current15.3 A
Ambient temp32 ... 104 °F
ConnectionConnector (X1)
PE connectionM5 screw
Rated pulse frequency4.00 kHz
StandardsCE, cULus
SafetySIL 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 6SL3120-1TE21-8AA4 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 6SL3120-1TE21-8AA4 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 6SL3120-1TE21-8AA4, 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 : 9lbs

Want it shipped today?

  • Order within the next 8 hours and 24 minutes.
  • If you order between 4pm and 6pm EST, you will be charged a small rush fee.

Ask about exchanging your faulty 6SL3120-1TE21-8AA4 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 6SL3120-1TE21-8AA4 Overview

The Siemens 6SL31201TE218AA4 is a Single Motor Module that belongs to the SINAMICS S120 series. It is specifically designed for three-phase power systems with an input voltage of 400 VAC and a maximum output voltage of 600 VDC. The motor module has a current rating of 18 Amps, making it suitable for a wide range of motor applications. 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.


As part of the SINAMICS S120 series, the 6SL31201TE218AA4 offers advanced motor control and drive functionalities. It is equipped with sophisticated features and technology that ensure precise control, high performance, and efficient operation. The motor module is designed to meet the demands of various industrial applications, including machine tools, packaging equipment, material handling systems, and more.

The 400 VAC input voltage indicates that the motor module is intended for use in power systems with a nominal voltage of 400 volts, typically found in industrial settings. It allows the motor module to be integrated seamlessly into existing electrical infrastructures.

With a maximum output voltage of 600 VDC, the 6SL31201TE218AA4 provides a flexible range of operating voltages for the connected motor. This enables compatibility with a wide variety of motor types and allows for precise control of motor speed and torque.


The motor module has a current rating of 18 Amps, indicating the maximum continuous current that it can deliver to the connected motor. This rating ensures that the motor module is capable of providing sufficient power to drive motors with moderate to high power requirements. It allows for efficient and reliable operation of motors within the specified current range.


Siemens is well-known for its expertise in motor control and drive technology, and the SINAMICS S120 series exemplifies this reputation. The series offers a comprehensive range of motor modules and accessories that can be easily integrated into complex automation systems. The 6SL31201TE218AA4 is designed to work seamlessly with other components of the SINAMICS S120 series, allowing for a modular and scalable approach to motor control.

In addition to its electrical specifications, the 6SL31201TE218AA4 incorporates advanced features for motor control and protection. It includes built-in protection mechanisms such as motor overload protection, short-circuit protection, and overvoltage protection. These features ensure the safe and reliable operation of the motor and help prevent damage to the motor and the motor module itself.


The motor module is designed with compact dimensions and robust construction, making it suitable for installation in space-constrained environments and demanding industrial applications. It is built to withstand harsh operating conditions, including high temperatures, vibrations, and electrical noise, ensuring long-term reliability and durability.

MRO provides technical documentation for the 6SL31201TE218AA4 SINAMICS S120 series and a two-year warranty.

In conclusion, the Siemens 6SL31201TE218AA4 is a single motor module from the SINAMICS S120 series, offering advanced motor control capabilities for three-phase power systems. With its 400 VAC input voltage, 600 VDC maximum output voltage, and 18 Amp current rating, it is well-suited for a wide range of motor applications in industrial settings. Its compact design, robust construction, and comprehensive features make it a reliable choice for motor control requirements.

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 6SL3120-1TE21-8AA4, 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 6SL3120-1TE21-8AA4 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

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

Conley Cooke

I needed a special drive, found it, and I was quickly assisted by Joe Kaminski. Everything was exactly as it should be....


We have an older DMU80 CNC Machine and the Handheld Control was damaged beyond repair. MRO was very helpful in confirmin...

Abbey-Purchasing Specialist