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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RV1042-4BA10 |
| Alternative Part Number | 3RV10424BA10 |
| Manufacturer | Siemens |
| Product Type | Circuit Breaker |
| Size | S3 |
| Number of Poles | 3 |
| Operating Voltage (Rated Value) | 690 V |
| Operating Current at AC-3 (400 V) | 20 A |
| Operating Power at AC-3 (400 V) | 7.5 kW |
| Trip Class | CLASS 10 |
| Adjustable Response Current | 14 – 20 A |
| Short-Circuit Breaking Capacity | At 400 V: 100 kA, At 500 V: 30 kA, At 690 V: 12 kA |
| Mounting Type | Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022 |
| Mounting Position | Any |
| Dimensions (Width x Height x Depth) | 70 mm x 165 mm x 174 mm |
| Connection Type | Screw-type terminals with box terminals for main current circuit |
| Ambient Operating Temperature | -20 ... +60 °C during operation |
| Protection Class IP | IP20 on the front |
| Mechanical Service Life | 50,000 switching cycles for the main contacts |
| Installation Altitude | Up to 2,000 meters above sea level |
| Resistance to Shock | 25g / 11 ms |
| Product Approvals | General Product Approval for use in hazardous locations |
| Phase Failure Detection | Yes |
| Overload Protection | Yes |
| Auxiliary Switch Option | Yes |
| Product Designation | For motor protection |
The Siemens 3RV1042-4BA10 is a robust circuit breaker designed for motor protection, ensuring efficient operation and safety in a variety of industrial applications. This circuit breaker falls under the SIRIUS product family, known for its reliability and performance. It is a size S3 device with a three-pole configuration for the main current circuit.
Featuring a Class 10 trip class, the 3RV1042-4BA10 provides overload protection with an adjustable response current range of 14 to 20 A, and a short-circuit release of 260 A. This allows for precise protection settings tailored to specific motor requirements. The circuit breaker is equipped with screw-type terminals with box terminals for the main current circuit, ensuring secure and reliable connections.
With an increased breaking capacity, the 3RV1042-4BA10 is capable of handling high fault currents, offering a rated short-circuit breaking capacity (Icu) of 100 kA at 400 V, 30 kA at 500 V, and 12 kA at 690 V. This high level of protection is essential for preventing damage to equipment and maintaining operational integrity.
The device is designed for versatility, with the ability to be mounted either by screws or snapped onto a 35 mm standard mounting rail according to DIN EN 50022. Its compact dimensions, with a width of 70 mm, a height of 165 mm, and a depth of 174 mm, make it suitable for installation in space-constrained environments.
The 3RV1042-4BA10 operates effectively within a wide range of ambient temperatures, from -20 to +70 degrees Celsius, and is rated for use up to an installation altitude of 2,000 meters above sea level. Its mechanical service life boasts approximately 50,000 switching cycles for the main contacts, highlighting the durability of the device.
This circuit breaker does not include auxiliary switches or undervoltage release mechanisms as standard, but it does allow for product extensions such as auxiliary switches and motor drives, providing flexibility for various application needs.
Overall, the Siemens 3RV1042-4BA10 circuit breaker is a high-quality protective device that offers reliable motor protection with its advanced features and robust design, making it a valuable component in industrial settings.
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Frequently Asked Questions
What is the function of this circuit breaker?
The circuit breaker is designed for motor protection, providing overload protection with a Class 10 trip characteristic. It also features phase failure detection, ensuring motors are safeguarded against a range of electrical faults.
Can this circuit breaker be used in hazardous locations?
Yes, the circuit breaker has general product approvals for use in hazardous locations, making it suitable for a variety of industrial environments.
What are the tripping characteristics of this circuit breaker?
This circuit breaker has a Class 10 tripping characteristic, which means it will trip when the current reaches a level that is 10 times the set current rating of the device, within a time range of 2 to 10 seconds.
What is the maximum operating altitude for this circuit breaker?
The circuit breaker can be installed at altitudes up to 2,000 meters above sea level without derating.
What are the ambient temperature limits for operating this circuit breaker?
The circuit breaker can operate within an ambient temperature range of -20 to +60 degrees Celsius, ensuring reliable performance in various climate conditions.
What type of terminals does this circuit breaker have?
It is equipped with screw-type terminals with box terminals for the main current circuit, providing a secure and reliable connection.
What is the rated operational voltage of this circuit breaker?
The rated operational voltage for the main current circuit of the circuit breaker is 690 volts AC/DC.
What is the mechanical service life of the main contacts?
The main contacts of the circuit breaker have a mechanical service life of typically 50,000 operating cycles, indicating its durability and longevity.
Is there an auxiliary switch option for this circuit breaker?
Yes, there is an option to add an auxiliary switch to the circuit breaker, which can be used for signalling and control purposes.
What is the breaking capacity of this circuit breaker at 400V?
The circuit breaker has a breaking capacity limit short-circuit current (Icu) of 100 kA at 400V, providing robust protection against short-circuit conditions.
