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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RV2021-4DA15 |
| Alternative Part Number | 3RV20214DA15 |
| Manufacturer | Siemens |
| Product Type | Circuit Breaker |
| Number of Poles | 3 Pole |
| Rated Current | 25 A |
| Rated Voltage | 690 V ac |
| Dimensions | 45 x 96.9 x 97 mm |
| Release Class | CLASS 10 |
| Adjustable Current Range | A-release 18...25 A |
| Instantaneous Short Circuit | N-release 325 A |
| Terminal Type | Screw terminal |
| Switching Capacity | Standard switching capacity |
| Commodity Code | 85362090 |
| Suitable For | Motor protection |
| Connection Technology | Screw-type terminals for main, auxiliary and control current circuit |
| Installation | Suitable for snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715 |
| Safety Related Data | B10 value with high demand rate acc. to SN 31920: 5,000 |
| Electrical Lifespan | Information available on request regarding electrical endurance and switching frequency |
The Siemens 3RV2021-4DA15 is a robust circuit breaker designed for motor protection, ensuring the safe and efficient operation of machinery in various industrial settings. This three-pole breaker is part of the SIRIUS 3RV2 range and is engineered to provide Class 10 overload protection. With an adjustable pick-up value current of the current-dependent overload release ranging from 18 to 25 A and a non-adjustable instantaneous short-circuit release of 325 A, it is well-suited for a wide array of applications.
The breaker features a compact design with dimensions of 45 x 96.9 x 97 mm, making it suitable for installation in space-constrained environments. It is equipped with screw-type terminals for secure and reliable connections, both for the main current circuit and auxiliary and control current circuits. The arrangement of electrical connectors is thoughtfully designed for top and bottom access, facilitating ease of installation and maintenance.
Constructed to withstand the demands of industrial use, the 3RV2021-4DA15 has a mechanical service life of 100,000 switching cycles, ensuring longevity and reliability. It also boasts an electrical endurance of the same number of cycles, highlighting its capability to handle frequent operations over time.
The circuit breaker is rated for an operating voltage of up to 690 V ac and has an operating current rating of 25 A at AC-3, making it versatile for various motor applications. It also features a temperature compensation range from -20 to +60 °C, allowing it to perform reliably across different environmental conditions.
With its finger-safe design and IP20 protection on the front and terminals, the Siemens 3RV2021-4DA15 circuit breaker is a dependable choice for motor protection, offering both performance and safety in industrial applications.
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Frequently Asked Questions
What type of circuit breaker is this?
This is a 3-pole circuit breaker designed for motor protection, with a CLASS 10 A-release range of 18 to 25 A and a N-release of 325 A, featuring screw terminals and a standard switching capacity.
Can this circuit breaker be used for main and auxiliary circuits?
Yes, it has screw-type terminals for both main current circuit and auxiliary and control current circuits, with the electrical connectors arranged at the top and bottom.
What are the installation requirements for this circuit breaker?
The circuit breaker can be mounted in any position and is suitable for screw and snap-on mounting onto a 35 mm standard mounting rail according to DIN EN 60715.
What is the rated operating voltage for this circuit breaker?
The rated operating voltage for this circuit breaker is 690 V ac.
What conductor cross-sections can be connected to this circuit breaker?
For main contacts, it can connect single or multi-stranded conductors of 2x (1 ... 2.5 mm²) and 2x (2.5 ... 10 mm²), as well as finely stranded with core end processing. For auxiliary contacts, it can connect 2x (0.5 ... 1.5 mm²) and 2x (0.75 ... 2.5 mm²).
What is the mechanical service life of this circuit breaker?
The mechanical service life of the main and auxiliary contacts is typically 100,000 switching cycles.
What are the dimensions of this circuit breaker?
The dimensions of the circuit breaker are 45 x 96.9 x 97 mm.
Is there a specific tightening torque for the terminals?
Yes, for main contacts with screw-type terminals, the tightening torque is 2 ... 2.5 N·m, and for auxiliary contacts with screw-type terminals, it is 0.8 ... 1.2 N·m.
What is the ambient operating temperature range for this circuit breaker?
The ambient operating temperature range is from -20 to +60 °C.
Does this circuit breaker have a short-circuit protection function?
Yes, it has a short-circuit protection function with a magnetic trip design.
