Siemens 3VA1340-6EE32-0AA0 High Breaking Capacity Molded Case Circuit Breaker 400A 3P 热磁式

The Siemens 3VA1340-6EE32-0AA0 is a high-performance, 3-pole molded case circuit breaker designed for robust protection in demanding industrial environments. Featuring a thermal-magnetic trip unit and a breaking capacity of up to 150 kA at 400V, this 400A breaker ensures superior safety and operational reliability. Its advanced design offers precise overcurrent protection, making it a vital component for safeguarding electrical distribution systems. The 3VA molded case circuit breaker series is engineered for flexibility and ease of integration, catering to a wide range of applications.

Product Specifications

| Parameter                     | Value                                  |

| :---------------------------- | :------------------------------------- |

| Product Type                  | Molded Case Circuit Breaker (MCCB)     |

| Siemens Order Number          | 3VA1340-6EE32-0AA0                     |

| Rated Current (In)            | 400 A                                  |

| Number of Poles               | 3P (3-Pole)                            |

| Breakang Capacity (Icu)  | 150 400/415 V AC         

| Trip Unit Type                | Thermal-Magnetic (Thermomagnetic)      |

| Frame Size                    | 3VA13                            |

| Voltage Rating (V)            | 690 V AC                               |

| Auxiliary Contact             | No                                     |

| Alarm Switch                  | No                                     |

| Mounting Type                 | Fixed                                  |

| Connection Type               | Front and back terminal                |

| Standards                     | IEC 60947-2                            |

| Protection Type               | LSI (Long-time, Short-time, Instantaneous) |

| Insulation Voltage (Ui)       | 800 V                                  |

| Impulse Withstand Voltage (Uimp) | 8 kV                                   |

Core Features & Market Positioning

The Siemens 3VA1340-6EE32-0AA0 stands out in the market due to its exceptional breaking capacity, providing a critical safety margin for high-fault current situations. Its robust thermal-magnetic trip unit offers reliable and precise protection against overloads and short circuits, a hallmark of Siemens' commitment to industrial safety. The 3VA series is positioned as a dependable and versatile solution for electrical distribution and protection, favored by engineers for its straightforward design and consistent performance. This breaker's compact form factor, combined with its high rating, allows for space savings in control panels without compromising protection levels.

Key Application Scenarios

This 400A, 3-pole circuit breaker is ideally suited for main incomers in industrial facilities, power distribution panels in commercial buildings, and as a protective device for large motor loads. Its high breaking capacity makes it an excellent choice for applications where short-circuit currents are a significant concern, such as in power plants or manufacturing plants with heavy machinery. The 3VA1340-6EE32-0AA0 also finds application in renewable energy installations, protecting solar inverters and wind turbine components from electrical disturbances.

Practical System Integration Guidance

Integrating the Siemens 3VA1340-6EE32-0AA0 is facilitated by its standardized connection types, allowing for front and rear terminal access. Proper installation requires ensuring that the ambient temperature is within the specified operating range and that adequate ventilation is provided to prevent overheating. When wiring, it is crucial to use conductors of the appropriate size to handle the 400A rated current and to torque all connections to the manufacturer's specifications to ensure electrical integrity and prevent premature failure. The breaker's fixed mounting design simplifies panel assembly, making it a straightforward component in new installations or retrofits.

Operation and Risk Mitigation

Operating the Siemens 3VA1340-6EE32-0AA0 involves understanding its manual trip and reset mechanism, along with the trip indicators on the front panel. Regular visual inspections for signs of wear, damage, or overheating are essential for risk mitigation. While the thermal-magnetic trip unit offers reliable protection, periodic testing of its tripping characteristics, particularly for critical applications, is recommended to ensure it operates within its designed parameters and to mitigate the risk of nuisance tripping or failure to trip. Emergency procedures should include proper lockout/tagout protocols before any maintenance or inspection.

Scalability & Long-Term Value

The Siemens 3VA1340-6EE32-0AA0 is part of a broader ecosystem of Siemens circuit protection devices, allowing for seamless integration into larger Siemens control and automation systems. While this specific model is a fixed type, the 3VA series offers various accessories and communication modules (sold separately) that can enhance its functionality, enabling integration with IIoT platforms for remote monitoring and diagnostics. This forward-thinking design ensures long-term value by providing a foundation for future upgrades and digital transformation initiatives within the electrical infrastructure.

Frequently Asked Questions

What is the breaking capacity of the Siemens 3VA1340-6EE32-0AA0?

The Siemens 3VA1340-6EE32-0AA0 boasts a high breaking capacity of 150 kA at 400/415 V AC.

This robust capability ensures it can safely interrupt severe short-circuit currents, protecting downstream equipment and personnel.

This makes it suitable for applications in areas with high prospective fault levels.

What type of trip unit does this circuit breaker use?

This circuit breaker utilizes a thermal-magnetic trip unit.

The thermal element provides protection against sustained overcurrents (overloads), while the magnetic element offers instantaneous protection against short circuits.

This dual-action design ensures comprehensive protection against common electrical faults.

What are the key applications for the Siemens 3VA1340-6EE32-0AA0?

It is ideal for main incomers in industrial and commercial distribution systems.

It can also be used for protecting large motor loads or as a feeder breaker in power distribution panels.

Its high breaking capacity is particularly beneficial in applications where fault currents are expected to be high.

Can this circuit breaker be used in harsh environmental conditions?

The standard version is designed for typical industrial environments, but specific environmental ratings should be confirmed.

Siemens offers accessories and variants that might enhance its suitability for more demanding conditions.

Always consult the detailed product manual for environmental limitations and operational guidelines.

How is the Siemens 3VA1340-6EE32-0AA0 installed?

Installation typically involves fixed mounting within a control panel or switchboard.

Connections are made via front and/or rear terminals, requiring appropriate conductor sizing and torque.

Ensure proper ventilation and adherence to local electrical codes during installation.

What are the advantages of a thermal-magnetic trip unit?

Thermal-magnetic units offer a reliable and cost-effective solution for circuit protection.

They provide a good balance between overload sensitivity and short-circuit response.

This technology is well-understood and widely used in industrial applications for consistent performance.

Is this circuit breaker suitable for DC applications?

The Siemens 3VA1340-6EE32-0AA0 is primarily designed for AC applications.

Using it in DC systems may require specific configurations or ratings not covered by its standard AC specifications.

Always verify the product's suitability for DC circuits with Siemens documentation.

What standards does this circuit breaker comply with?

This circuit breaker complies with the IEC 60947-2 standard.

This international standard specifies the requirements for low-voltage switchgear, including circuit breakers.

Compliance ensures the product meets stringent safety and performance criteria.

Can I remotely monitor or control this circuit breaker?

This specific model (3VA1340-6EE32-0AA0) does not include integrated communication capabilities.

However, accessories for the 3VA series, such as communication modules, can be added to enable remote monitoring.

Integration with SCADA or IIoT systems is possible with the appropriate add-on modules.

What is the frame size of this circuit breaker?

The frame size for this circuit breaker is 3VA13.

This designation helps in identifying its physical dimensions and current carrying capacity range within the Siemens 3VA family.

Frame size is a critical parameter for panel space planning and component selection.