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Siemens 3RV1021-4BA10

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Part Number3RV1021-4BA10
Model #3RV10214BA10
Warranty2 Year
ProductCirciut breaker
DestinationMotor protection
Rated current10.5 W
Per pole rated current3.5 W
Surge voltage resistance rated value6000 V
Front protectionIP20
Aux SwitchYes
Shock resistance25g / 11 ms
Cont. rated value20 A
Max altitude2000 m
No. of poles3 poles
Rated operating voltage690 V
Frequency15 1/h at AC-3 maximum
Phase failure detectionYes
Trip classCLASS 10
Short circuit protectionThermomagnetic
Height97 mm
Width45 mm
Depth96 mm

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 3RV1021-4BA10 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 3RV1021-4BA10 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 3RV1021-4BA10, 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 : 1lb

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Ask about exchanging your faulty 3RV1021-4BA10 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 3RV1021-4BA10 Overview

The 3RV10214BA10 is a versatile and reliable motor protection circuit breaker manufactured by Siemens. This compact and robust device offers advanced motor protection features, making it an essential component in industrial applications where the protection of motors is crucial. With its high-performance capabilities and user-friendly design, the 3RV10214BA10 is widely used in various industries worldwide. 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 Contactors from other manufacturers such as FANUC and Yaskawa.


One of the key features of the 3RV10214BA10 is its motor overload protection. This device is capable of monitoring the current flowing through the motor and detecting any abnormal or excessive current levels. In the event of an overload, the circuit breaker automatically trips and disconnects the motor from the power supply, preventing damage to the motor and ensuring its safe operation. The 3RV10214BA10 offers adjustable overload settings, allowing users to customize the protection parameters based on the specific requirements of their motor.

In addition to overload protection, the 3RV10214BA10 also provides short-circuit protection. It incorporates a built-in short circuit release mechanism that can quickly detect and respond to short circuit faults in the motor circuit. When a short circuit occurs, the circuit breaker instantly trips, isolating the motor from the power source and minimizing the risk of electrical hazards and further damage to the equipment. This reliable short circuit protection feature enhances the safety and reliability of motor operations in industrial settings.

Furthermore, the 3RV10214BA10 offers phase-failure protection. It is designed to detect the absence or imbalance of phases in the motor supply voltage. In the event of a phase failure, the circuit breaker promptly trips, preventing the motor from operating under unfavorable conditions. This protection mechanism is crucial for preventing damage to the motor and maintaining its efficiency. Additionally, the 3RV10214BA10 can also be equipped with an auxiliary contact that allows for remote indication or signaling when a fault occurs.


The 3RV10214BA10 is known for its user-friendly design and easy installation process. It features a compact and space-saving design, allowing for flexible mounting options in various electrical panels and enclosures. The device incorporates clear labeling and color-coded terminals, simplifying the wiring process and reducing the chances of errors during installation. The circuit breaker also provides a convenient handle for manual operation, enabling users to manually trip and reset the device when necessary.

To ensure compatibility with different motor sizes and applications, the 3RV10214BA10 offers a wide range of current ratings. Users can select the appropriate circuit breaker based on their motor's rated current, ensuring optimal protection and performance. Furthermore, the 3RV10214BA10 is designed to withstand harsh operating conditions, with a high breaking capacity to handle high fault currents and durable construction to resist mechanical stress and environmental factors.

In conclusion, the 3RV10214BA10 motor protection circuit breaker from Siemens offers advanced motor protection features and a user-friendly design. With its overload, short circuit, and phase-failure protection capabilities, it ensures the safe and reliable operation of motors in industrial applications. Its compact size, easy installation process, and compatibility with different current ratings make it a popular choice among engineers and professionals in various industries. Whether it's protecting motors from overloads, short circuits, or phase failures, the 3RV10214BA10 provides an effective and efficient solution for motor protection needs.

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 3RV1021-4BA10, take a look at more from our Contactors 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 3RV1021-4BA10 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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