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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RV2021-4BA25 |
| Alternative Part Number | 3RV20214BA25 |
| Manufacturer | Siemens |
| Type | Circuit Breaker |
| Mounting Type | Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715 |
| Mounting Position | Any |
| Dimensions (Depth x Height x Width) | 96 mm x 119 mm x 45 mm |
| Electrical Connection | Spring-loaded terminals for main current circuit and auxiliary/control current circuit |
| Connectable Conductor Cross-section | Main contacts: 2x (1 ... 10 mm²) solid, 2x (1 ... 6 mm²) finely stranded |
| AWG Conductors | Main contacts: 2x (18 ... 8), Auxiliary contacts: 2x (20 ... 14) |
| Installation Clearance | Downwards/Upwards: 50 mm, At the side: 30 mm, Backwards/Forwards: 0 mm |
| Approval | General Product Approval for use in hazardous locations, KC |
| Tripping Characteristics | Available upon request |
| Electrical Endurance | Further characteristics such as electrical endurance and switching frequency available |
The Siemens 3RV2021-4BA25 is a robust circuit breaker designed for motor protection, ensuring the safe and efficient operation of machinery in various industrial settings. This component, part of the SIRIUS product line, is engineered to provide class 10 protection, with an adjustable pick-up value current of the current-dependent overload release ranging from 13 to 20 A. The N-release mechanism is rated at 260 A, offering reliable short-circuit protection.
Crafted for convenience and durability, the 3RV2021-4BA25 features a spring-loaded connection system that simplifies installation and maintenance. Its compact design, with a width of 45 mm, height of 119 mm, and depth of 97 mm, allows for efficient use of space inside control cabinets. The circuit breaker can be mounted in any position, offering flexibility in various mounting scenarios.
The unit is equipped with a transverse auxiliary switch (1NO+1NC), expanding its functionality and integration capabilities within complex control systems. The spring-loaded terminals support a range of conductor cross-sections for both main and auxiliary contacts, accommodating various wiring requirements.
With a mechanical service life of approximately 100,000 switching cycles and similar electrical endurance, the Siemens 3RV2021-4BA25 is built to last, providing a reliable solution for motor protection that meets the demands of rigorous industrial environments.
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Frequently Asked Questions
What type of device is this circuit breaker suitable for?
This circuit breaker is designed for protection of motors in industrial applications, providing both short-circuit and overload protection.
Can this circuit breaker be used in hazardous locations?
Yes, it is suitable for use in hazardous locations and complies with the ATEX directive for explosive atmospheres.
What is the rated operating voltage of this circuit breaker?
The rated operating voltage for this circuit breaker is up to 690V.
What is the range for the adjustable pick-up value current of the overload release?
The adjustable pick-up value current of the current-dependent overload release ranges from 13 to 20A.
What are the mechanical and electrical endurance ratings for this circuit breaker?
The mechanical and electrical endurance ratings for this circuit breaker are typically 100,000 switching cycles for both main and auxiliary contacts.
What are the installation requirements regarding clearance around the circuit breaker?
The installation requires clearances of 50mm upwards and downwards, 30mm at the side, and 0mm backwards for live parts at 690V.
What type of terminals does this circuit breaker have for electrical connections?
This circuit breaker features spring-loaded terminals for both the main current circuit and auxiliary and control current circuit.
Is there a specific ambient temperature range for operating this circuit breaker?
The circuit breaker can operate within an ambient temperature range of -20 to +60°C.
What is the significance of the B10 value for this circuit breaker?
The B10 value indicates the number of operations until 10% of the devices are expected to fail due to mechanical wear, which is 5,000 for this circuit breaker with a high demand rate.
How does the temperature compensation feature work for this circuit breaker?
Temperature compensation ensures that the circuit breaker operates reliably over its specified temperature range without the need for manual adjustments.
Part conditions explained
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