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SIEMENS 3RV2021-4DA10
by Siemens
Read verified buyer reviews ↓OverviewElevate your industrial operations with the SIEMENS 3RV2021-4DA10 Motor Protection Circuit Breaker, a vital part of the esteemed SIRIUS line. This device provides comprehensive overload and short-circuit safeguarding, preserving your essential motor assets and ensuring continuous operation. The 3RV2021-4DA10 showcases Siemens' dedication to advanced industrial control, providing a robust solution that combines accurate tripping characteristics with a remarkably small size, making it a crucial element in any contemporary electrical setup. Designed for seamless integration into various applications, this circuit breaker not only prevents costly motor damage from excessive currents but also contributes to the overall efficiency and lifespan of your equipment. Its intuitive design and dependable functionality make it a preferred option for engineers and plant managers seeking superior protection and reduced downtime in demanding industrial environments.Key Features Exact Motor Safeguarding: Offers robust thermal and magnetic trip functions to efficiently shield motors from both overload and short-circuit events. SIRIUS Series Dependability: Part of the trusted Siemens SIRIUS family, guaranteeing top-tier engineering and consistent performance in industrial settings. Optimized Current Range: Specifically engineered for a rated current of 17-23 A, suitable for a wide array of motor specifications. Space-Saving Form Factor: Its compact size allows for efficient use of space within control panels, optimizing cabinet layouts. Enhanced Industrial Strength: Built to endure the demands of industrial settings, ensuring a long operational life and steady protection. DIN Rail Compatibility: Features simple and secure DIN rail mounting, simplifying installation and integration into current systems. Superior System Uptime: By preventing motor damage, it significantly lowers the probability of unexpected shutdowns and production delays. Technical Specifications Product Category: Motor Protection Circuit Breaker Series: SIRIUS Model Number: 3RV2021-4DA10 Rated Current: 17-23 A Rated Voltage: Up to 690V AC Protection Mechanism: Thermal Overload Protection, Magnetic Short-Circuit Protection Mounting Method: DIN Rail Industrial Compliance: Adheres to relevant industrial safety and performance standards. Operating Temperature: Optimized for typical industrial operating temperatures. Applications Extensive Motor Control Systems: Perfect for safeguarding motors in various industrial machinery, pumps, fans, and conveyor systems. Industrial Automation Projects: An essential part for ensuring the stable and safe operation of automated production lines and processes. Machine Tool Protection: Shields important machinery and equipment from electrical faults, extending the lifespan of valuable assets. HVAC and Refrigeration Units: Provides dependable protection for motors utilized in heating, ventilation, air conditioning, and refrigeration systems. Control Panel Integration: Ideally suited for integration into industrial control panels where space optimization and reliable protection are critical. Power Distribution Protection: Contributes to the overall safety and reliability of industrial power distribution networks. Why ChooseBenefit from Siemens' renowned engineering excellence, ensuring a motor protection circuit breaker you can rely on to perform consistently in challenging conditions. Proactive protection against overloads and short circuits results in significant savings by avoiding costly motor repairs and downtime. The SIRIUS series design guarantees straightforward installation and compatibility within existing Siemens-based industrial control systems, streamlining upgrades and maintenance.Order NowEnsure the longevity and efficiency of your motors by choosing the SIEMENS 3RV2021-4DA10 Motor Protection Circuit Breaker. Contact us today to place your order and experience unparalleled protection for your industrial applications.FAQWhat is the primary function of the SIEMENS 3RV2021-4DA10?Its primary function is to provide comprehensive thermal overload and magnetic short-circuit protection for industrial motors, ensuring their safe and continuous operation.What current range is this circuit breaker designed for?The SIEMENS 3RV2021-4DA10 is specifically designed for a rated current range of 17-23 A.Is this device easy to install in existing systems?Yes, featuring DIN rail compatibility, it offers easy and secure installation, simplifying integration into current electrical systems.
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SIEMENS 3RV2021-4DA10
Overview
This is a genuine Siemens component. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.
Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.
Key Features
- Genuine Siemens catalog part
- Tested before shipment
- Backed by PalmPartsSolution warranty
- Cross-reference and revision assistance available
- Compatible with the broader Siemens automation ecosystem
Compatibility
When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Siemens equipment. Where applicable, confirm:
- Input/output voltage and current rating
- Communication protocol and network role
- Mounting form factor and footprint
- Operating temperature, humidity, and IP rating
- Required certifications (UL, CE, ATEX, marine, etc.)
Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.
Replacement Information
Three ways to source this part through PalmPartsSolution:
- Exact replacement — same Siemens catalog number, new or refurbished, tested and warrantied
- Form-fit-function equivalent — alternate revision or build that drops in without code changes
- Engineered migration — current-generation Siemens platform with documented conversion notes
Contact our engineering team if you need help choosing between these tracks.
Technical Specifications
- Product Category: Motor Protection Circuit Breaker
- Series: SIRIUS
- Model Number: 3RV2021-4DA10
- Rated Current: 17-23 A
- Rated Voltage: Up to 690V AC
- Protection Mechanism: Thermal Overload Protection, Magnetic Short-Circuit Protection
- Mounting Method: DIN Rail
- Industrial Compliance: Adheres to relevant industrial safety and performance standards.
- Operating Temperature: Optimized for typical industrial operating temperatures.
Applications
- Extensive Motor Control Systems: Perfect for safeguarding motors in various industrial machinery, pumps, fans, and conveyor systems.
- Industrial Automation Projects: An essential part for ensuring the stable and safe operation of automated production lines and processes.
- Machine Tool Protection: Shields important machinery and equipment from electrical faults, extending the lifespan of valuable assets.
- HVAC and Refrigeration Units: Provides dependable protection for motors utilized in heating, ventilation, air conditioning, and refrigeration systems.
- Control Panel Integration: Ideally suited for integration into industrial control panels where space optimization and reliable protection are critical.
- Power Distribution Protection: Contributes to the overall safety and reliability of industrial power distribution networks.
Why Choose the 3RV2021-4DA10?
Benefit from Siemens' renowned engineering excellence, ensuring a motor protection circuit breaker you can rely on to perform consistently in challenging conditions. Proactive protection against overloads and short circuits results in significant savings by avoiding costly motor repairs and downtime. The SIRIUS series design guarantees straightforward installation and compatibility within existing Siemens-based industrial control systems, streamlining upgrades and maintenance.
Availability & Shipping
- ▸In stock: 3RV2021-4DA10 ready for immediate dispatch from our Florida warehouse.
- ▸Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
- ▸Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
- ▸Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
- ▸Buy with confidence: Every 3RV2021-4DA10 ships with a 1-Year PALM Parts warranty and a 30-day return window.
Frequently Asked Questions — Siemens
Machine down? We ship parts the same day.
New, surplus, and refurbished Siemens inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.
Related Siemens resources
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Independent Supplier Notice
PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.
Product Condition & Firmware
All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.