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2-year Warranty

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Siemens 3RV1021-1GA10

DESCRIPTION: G120P Inverter Line-side Power Components - Circuit Breaker
INFO: Contactors

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2 Year warranty

Part Number3RV1021-1GA10
Model #3RV10211GA10
Warranty2 Year
CategoryCircuit breaker
Motor protectionClass 10
Main current poles3 poles
Voltage resistance6000 V
Electrical shock protectionFinger safe
Aux switchYes
Ambient temp-20 … +70°C
Power loss6 W
Operation voltage 690 V
Voltage typeAC/DC
Power rating2.2 kW
Current rating6.3A
Operating cycles100000
Mountingscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Height97 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 3RV1021-1GA10 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 3RV1021-1GA10 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 3RV1021-1GA10, 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 3RV1021-1GA10 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 3RV1021-1GA10 Overview

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 Contactors from other manufacturers such as FANUC and Yaskawa.

Siemens 3RV1021-1GA10

The 3RV1021-1GA10 is a circuit breaker designed for motor protection and falls into the S0 size category. Manufactured by Siemens as part of the SIRIUS product range, it offers reliable protection for motors, making it an essential component in industrial and electrical systems.

Key Features

  1. Motor Protection: The primary function of the 3RV1021-1GA10 circuit breaker is to protect motors from overcurrent conditions. It operates with a Class 10 trip characteristic, meaning it provides fast and precise protection against overloads.
  2. Current Rating: This circuit breaker is designed to protect motors with a rated current range of 4.5A to 6.3A. It ensures that the motor is safeguarded from excessive current flow that could cause damage or overheating.
  3. Three Poles: It has three poles, making it suitable for three-phase applications where all three phases need to be protected simultaneously.
  4. Impulse Voltage Resistance: With an impulse voltage resistance of 6,000V, this circuit breaker can withstand voltage spikes and surges, protecting the motor and associated equipment from voltage-related damage.
  5. Protection Class: The circuit breaker has an IP20 rating, which means it provides protection against solid objects but is not suitable for use in wet or dusty environments.
  6. Finger-Safe Design: It features a finger-safe design, ensuring that operators are protected from accidental contact with live parts, enhancing safety during installation and maintenance.
  7. Wide Temperature Range: The 3RV1021-1GA10 can operate in a wide temperature range, from -20°C to +70°C, making it suitable for use in diverse environmental conditions.

Electrical Specifications

  • Operating Voltage: 690V AC/DC
  • Service Power at AC-3 (at 400V): 2.2 kW
  • Operational Current at AC-3 (at 400V): 6.3A
  • Breaking Capacity Limit Short-Circuit Current: 100 kA at 400V, 500V; 6 kA at 690V

Mechanical Durability

  • The circuit breaker is designed for long service life, with mechanical operating cycles of up to 100,000 cycles for the main contacts.

Mounting and Dimensions

  • The 3RV1021-1GA10 can be mounted on a 35 mm standard mounting rail according to DIN EN 50022, allowing for flexible installation in control panels and cabinets.
  • Its dimensions are as follows: 96mm (depth), 97mm (height), and 45mm (width).


  • Electrical connections are made through screw-type terminals for both the main current circuit and auxiliary/control circuits.
  • The circuit breaker accommodates a range of conductor cross-sections for different types of conductors, including solid, finely stranded, and stranded wires, making it versatile in terms of wiring options.


The 3RV1021-1GA10 circuit breaker is a vital component in industrial and commercial applications where motor protection is essential. Its Class 10 overload protection ensures that motors are safeguarded from overcurrent conditions that can lead to overheating and damage. Typical applications include:

  1. Industrial Machinery: Used in a wide range of industrial machinery and equipment to protect motors from overloads, ensuring the reliable and safe operation of machines.
  2. Conveyor Systems: Essential for conveyor systems where motors power the movement of goods and materials.
  3. Pumps and Fans: Protects motors in pumps and fans used in various industries, including HVAC systems, water treatment, and manufacturing.
  4. Production Lines: Ensures the protection of motors driving production line equipment and machinery.

In conclusion, the 3RV1021-1GA10 circuit breaker by Siemens is a reliable and versatile component designed to protect motors from overcurrent conditions. Its robust construction, finger-safe design, and wide range of applications make it valuable in industrial and electrical systems, ensuring the safe and efficient operation of motors and associated equipment.

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 3RV1021-1GA10, 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 3RV1021-1GA10 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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