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Siemens
3RV2021-4NA10
Marvo Stock ID: MV-263DUsed
£101.84 (ex. VAT)
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Specifications
Specification | Description |
---|---|
Part Number | 3RV2021-4NA10 |
Alternative Part Number | 3RV20214NA10 |
Manufacturer | Siemens |
Type | Circuit Breaker |
Poles | 3 Pole |
Rated Current | 28 A |
Rated Voltage | 690 V ac |
Dimensions | 45 x 96.9 x 97 mm |
Mounting Type | Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715 |
Terminal Type | Screw-type terminals |
Electrical Endurance | 100,000 switching cycles typical |
Mechanical Service Life | 100,000 switching cycles typical |
Operating Temperature Range | -20...+60 °C during operation |
Storage Temperature Range | -50...+80 °C |
Short-Circuit Protection | Yes, with magnetic trip |
Protection Class | IP20 |
Installation Altitude | Maximum 2,000 m above sea level |
Relative Humidity | 10...95% during operation |
Adjustable Pickup Value Current | 23...28 A for the current-dependent overload release |
Operating Power at AC-3 | - 7,500 W at 230 V - 15,000 W at 400 V - 18,500 W at 500 V - 22,000 W at 690 V |
Shock Resistance | 25g / 11 ms according to IEC 60068-2-27 |
Type of Protection | Increased safety |
Certificate of Suitability | ATEX |
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3RV2021-4NA10 Product Description
The Siemens 3RV2021-4NA10 is a robust circuit breaker designed for motor protection, ensuring the safe and efficient operation of machinery in various industrial settings. This three-pole device is engineered to provide class 10 protection, with an adjustable release range of 23 to 28 A, and a non-delayed short-circuit release of 364 A. Its compact dimensions, 45 x 96.9 x 97 mm, allow for convenient installation in space-constrained environments.
Crafted for durability, the 3RV2021-4NA10 boasts a mechanical service life of 100,000 operating cycles, making it a reliable choice for long-term use. The circuit breaker operates effectively within a voltage rating of up to 690 V ac and is capable of handling motor power up to 20 hp at 460/480 V, which translates to a robust performance for a wide range of motor applications.
Installation is made straightforward with screw and snap-on mounting options onto a 35 mm standard mounting rail according to DIN EN 60715, allowing for flexibility in various mounting positions. The device also features screw-type terminals for secure and reliable electrical connections.
The Siemens 3RV2021-4NA10 is designed with safety in mind, offering finger-safe protection and an IP20 rating on the front, ensuring protection against solid objects and accidental contact. Its operational reliability is further enhanced by its ability to function optimally within a broad temperature range and at installation altitudes of up to 2000 metres above sea level.
This circuit breaker is an essential component for industrial professionals seeking a dependable solution for motor protection that combines performance, safety, and ease of use.
Frequently Asked Questions
What type of circuit breaker is this?
This is a 3-pole circuit breaker designed for motor protection, belonging to the SIRIUS 3RV2 series. It features a Class 10 overload release and is suitable for use in controlling and protecting motors.
Can this circuit breaker be used in hazardous locations?
Yes, the circuit breaker is designed with safety in mind and has approvals for use in hazardous locations, ensuring compliance with industry safety standards.
What is the rated operating voltage of this circuit breaker?
The rated operating voltage of the circuit breaker is 690 V ac, making it suitable for a wide range of industrial applications.
What is the current adjustment range for the overload release?
The adjustable pick-up value current of the current-dependent overload release ranges from 23 to 28 A, allowing for precise protection settings based on the motor's requirements.
What are the dimensions of this circuit breaker?
The dimensions of the circuit breaker are 45 x 96.9 x 97 mm, which is a compact size that allows for efficient use of space in electrical panels.
Is there a need for additional spacing when mounting this circuit breaker?
When mounting the circuit breaker, it is recommended to maintain a spacing of 50 mm upwards and downwards, and 30 mm at the side for live parts, to ensure proper heat dissipation and safety.
What type of terminal connections does this circuit breaker have?
The circuit breaker is equipped with screw-type terminals for the main current circuit, providing a secure and reliable connection.
Does this circuit breaker have a short-circuit protection function?
Yes, it includes a magnetic short-circuit trip function to protect against short-circuit conditions, enhancing the safety of the electrical system it is integrated into.
What is the mechanical service life of the circuit breaker?
The mechanical service life of the main contacts is typically 100,000 switching cycles, indicating a durable and long-lasting design.
Can auxiliary contacts be added to this circuit breaker?
While the circuit breaker does not come with auxiliary contacts, it does allow for the addition of auxiliary switches, providing flexibility for various control and signalling functions.