Siemens 3RV2021-1BA10

Siemens 3RV2021-1BA10 – Reliable Motor Protection You Can Count On

The Siemens 3RV2021-1BA10 is a SIRIUS circuit breaker engineered for superior motor protection and dependable performance in demanding industrial environments. Designed for size S0 applications, this circuit breaker ensures reliable startup, overload protection, and fault interruption, providing peace of mind and long-lasting equipment life.

As part of the SIRIUS modular system, the 3RV2021-1BA10 integrates seamlessly with Siemens contactors and control devices, making it a go-to solution for efficient system design. With class 10 A-release settings from 1.4 to 2 amps and an N-release of 26 amps, this circuit breaker provides precise, consistent motor safeguarding. The standard switching capacity ensures it performs effectively across a range of industrial automation setups.

Built with screw terminal connections, installation and maintenance are simple and secure. The compact S0 frame size optimizes space without compromising protection or reliability. Whether in manufacturing, process control, or energy management systems, this Siemens motor protection breaker upholds the brand's reputation for innovation, durability, and electrical safety.

Key Features and Benefits

• Motor Protection: Offers reliable protection against overloads, phase failures, and short circuits, extending motor life.
• Adjustable Trip Settings: Class 10 A-release (1.4–2 A) provides flexibility to match specific motor requirements.
• High Breaking Capacity: With standard switching capability, it ensures safe circuit interruption during fault conditions.
• Compact S0 Design: Saves valuable panel space while maintaining robust protection.
• Durable Construction: Siemens' high-quality materials deliver consistent performance even in harsh industrial conditions.
• Easy Integration: Designed for compatibility with Siemens SIRIUS control components for streamlined system building.
• Quick Installation: Screw terminals ensure fast, secure wiring connections.
• Immediate Availability: In stock and ready to ship with free shipping and a 2-year MRO Electric warranty.

Typical Applications

The Siemens 3RV2021-1BA10 is ideal for:

• Industrial automation and control panels
• Conveyor and pump systems
• HVAC and fan control
• Process equipment
• Machine building and packaging industries

Its ability to protect small to medium-sized motors from electrical faults makes it an essential part of any industrial electrical setup.

Technical Specifications

• Manufacturer: Siemens
• Series: SIRIUS
• Part Number: 3RV2021-1BA10
• Function: Motor Protection Circuit Breaker
• Size: S0
• Class: 10 A-release 1.4–2 A
• N-release: 26 A
• Connection Type: Screw terminal
• Switching Capacity: Standard
• Warranty: 2-Year MRO Electric Warranty
• Availability: Free shipping, available immediately

Frequently Asked Questions (FAQ)

What is the primary purpose of the Siemens 3RV2021-1BA10?

It provides overload and short-circuit protection for motors, ensuring safe operation and preventing damage.

Is it compatible with Siemens contactors?

Yes. The 3RV2021-1BA10 integrates perfectly with Siemens SIRIUS contactors and accessories.

Can it be used for direct-on-line (DOL) motor starters?

Absolutely. It's ideal for DOL configurations within its rated current range.

What is the difference between Class 10 A-release and N-release?

The A-release protects against overload conditions, while the N-release handles short-circuit protection.

How quickly can I get it?

MRO Electric offers immediate availability and free same-day shipping on most orders.

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

Contact Us Today For More Information About the 3RV2021-1BA10

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 sales@mroelectric.com, we strive for customer satisfaction first. This means lower prices and better service for you. For more products like 3RV2021-1BA10, 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 3RV2021-1BA10 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.