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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RV2021-4AA20 |
| Alternative Part Number | 3RV20214AA20 |
| Manufacturer | Siemens |
| Type | Circuit Breaker |
| Rated Current | 16 A |
| Rated Voltage | 690 V ac |
| Mounting Type | DIN Rail Mount |
| Short Circuit Breaking Capacity | 2 kA |
| Number of Poles | 3 Poles |
| Terminal Type | Spring-loaded terminals |
| Electrical Endurance | 100,000 switching cycles typical |
| Mechanical Service Life | 100,000 switching cycles typical |
| Ambient Operating Temperature Range | -20...+60 °C |
| Installation Altitude | Up to 2,000 m above sea level |
| Relative Humidity | 10...95 % during operation |
| Protection Type | Increased safety, finger-safe |
| Certificate of Suitability | ATEX |
| Compliance | CE, UL, CSA |
| Product Approvals | For use in hazardous locations |
| Tripping Characteristics | Adjustable pick-up value current of the current-dependent overload release 10...16 A |
The Siemens 3RV2021-4AA20 is a robust circuit breaker designed for industrial applications requiring reliable protection against overloads and short circuits. This three-pole device is engineered to handle a maximum operating voltage of 690 V ac, making it suitable for a wide range of electrical systems. With a 16 A current rating, it ensures safe operation of motors and other electrical equipment by interrupting power in the event of a fault.
Featuring a DIN Rail mount design, the 3RV2021-4AA20 allows for quick and easy installation within control cabinets, streamlining the setup process in various industrial environments. The circuit breaker is equipped with a magnetic short-circuit trip mechanism, ensuring rapid response to fault conditions and minimising potential damage to connected equipment.
The compact dimensions of this circuit breaker, with a width of only 45 mm, make it an efficient choice for space-constrained applications. It also boasts a mechanical service life of 100,000 switching cycles, indicating a long-lasting and durable performance.
Designed with safety in mind, the 3RV2021-4AA20 has an IP20 protection rating, providing a degree of protection against solid objects and ensuring the safety of personnel during operation and maintenance. Its compliance with international standards, including ATEX certification for increased safety, underscores its suitability for use in demanding industrial settings.
Overall, the Siemens 3RV2021-4AA20 circuit breaker is a reliable and efficient solution for protecting electrical circuits in a variety of industrial applications, offering both performance and peace of mind.
Commonly Asked Questions
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Marvo provides a full 12-month warranty on all products, whatever the condition. For your peace of mind, all parts are ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. If you are unhappy with the part(s) you received and would like to request a return, you can do so by completing our quick and easy online form. Once we have received your Returns Request, a member of the team will be in touch to discuss this further with you. You can read more about our warranty policy here.
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Marvo is a highly credible supplier of industrial automation parts and components with dedicated hubs around the world offering industry-leading products and services. Marvo is committed to providing a quick, easy and reliable place to source your automation and control components. All purchases come as standard with a comprehensive 12-month return to base warranty meaning that, in just a few clicks, you can source critical parts more seamlessly than ever before. Click here to read an article on how Marvo is redefining convenience for automation and manufacturing professionals.
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Frequently Asked Questions
What type of device is this circuit breaker suitable for?
The Siemens circuit breaker is suitable for protecting electrical circuits from overloads and short circuits in industrial, commercial, and residential applications. It's designed for DIN rail mounting and can be used in a variety of devices that require circuit protection up to 16 A and 690 V ac.
Can this circuit breaker be used in hazardous locations?
Yes, this circuit breaker has been designed with safety in mind and has approvals for use in certain hazardous locations. It's important to check the specific certifications and standards it meets for your particular application.
What is the interrupting capacity of this circuit breaker?
This circuit breaker has an interrupting capacity of 2 kA, which indicates its ability to safely disrupt a short-circuit current without damage.
How many poles does this circuit breaker have?
This circuit breaker is a 3-pole device, which means it can be used to protect three-phase circuits.
What is the operating temperature range for this circuit breaker?
The operating temperature range for this circuit breaker is from -20°C to +60°C, ensuring reliable performance across a wide range of environmental conditions.
What type of terminals does this circuit breaker have?
This circuit breaker is equipped with spring-loaded terminals for the main current circuit, providing a secure and maintenance-free connection.
Is there a need for additional spacing when installing this circuit breaker?
When installing this circuit breaker, it's recommended to maintain a spacing of 50 mm upwards and downwards, and 30 mm at the side for live parts at 690 V to ensure safe operation and adequate ventilation.
What is the mechanical service life of this circuit breaker?
The mechanical service life of this circuit breaker is typically 100,000 switching cycles for both the main and auxiliary contacts, indicating its durability and longevity.
Does this circuit breaker offer short-circuit protection?
Yes, this circuit breaker includes a magnetic short-circuit trip feature, providing reliable protection against short-circuit conditions.
What is the tripping characteristic of this circuit breaker?
The tripping characteristic of this circuit breaker is designed to respond to current-dependent overloads, with an adjustable pick-up value current ranging from 10 to 16 A.
Part conditions explained
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