Siemens 5SV3647-6KK12 Earth Leakage Protection Switch 4P 80A 300mA

Siemens 5SV3647-6KK12: Robust Earth Leakage Protection for Industrial Applications

The Siemens 5SV3647-6KK12 is a high-performance 4-pole Residual Current Circuit Breaker (RCCB) designed for reliable earth leakage protection in demanding industrial environments. This unit offers a rated current of 80A and a tripping residual current of 300mA, providing essential safety against electrical hazards. Its Type A functionality ensures detection of both AC and pulsating DC fault currents, making it versatile for various applications. The SIGRES product version is specifically engineered for harsh ambient conditions, offering enhanced durability and operational stability where standard devices might fail. With a breaking capacity of 10 kA and an insulation voltage of 2000V, the 5SV3647-6KK12 is built to withstand significant electrical stresses.

Product Specifications

| Feature                           | Specification                                    |

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

| Product Brand Name                | SENTRON                                          |

| Product Designation               | Residual Current Operated Circuit Breaker        |

| Design of the Product             | Instantaneous                                    |

| Product Type Designation          | 5SV3                                             |

| Product Version                   | SIGRES (harsh ambient conditions)                |

| Number of Poles                   | 4                                                |

| Size of Installation Devices      | According to DIN 43880: 1                        |

| Mechanical Service Life           | Typical 10,000 operating cycles                  |

| Short-Circuit Current (Series Fuse) | Max permissible 100 A                            |

| Short-Circuit Current Rating      | 10 kA                                            |

| Switching Function                | Not short-term delayed                           |

| Degree of Pollution               | 2                                                |

| Insulation Voltage (Ui)           | 2000 V                                           |

| Tripping Fault Current            | 300 mA                                           |

| Let-Through Current Permissible   | 7100 A                                           |

| I²t Value Permissible             | 110,000 A²·s                                     |

| Supply Voltage (AC)               | 230/400 V                                        |

| Operating Frequency               | 50 Hz                                            |

| Protection Class (IP)             | IP20 (with connected conductors in distribution board) |

| Switching Capacity Current (IEC 61008-1) | Rated value 0.8 kA                               |

| Power Loss (per pole, at rated current) | 4.2 W (maximum 12.6 W)                           |

| Mounting Method                   | DIN rail                                         |

| Dimensions (H x W x D)            | 90 mm x 72 mm x 70 mm                            |

| Installation Depth                | 70 mm                                            |

| Net Weight                        | Approx. 336 g                                    |

| Connectable Conductor Cross-Section (Solid) | Min. 0.75 mm², Max. 35 mm²                       |

| Connectable Conductor Cross-Section (Stranded) | Min. 0.75 mm², Max. 35 mm²                       |

| Tightening Torque                 | Min. 2.5 N·m, Max. 3 N·m                           |

| Product Feature                   | Silicon-free                                     |

| Product Extension                 | Installable supplementary devices                |

Core Features & Market Positioning

The Siemens 5SV3647-6KK12 stands out in the market due to its robust construction and the SIGRES designation, indicating its suitability for harsh ambient conditions such as those with high humidity, dust, or aggressive chemicals. This feature positions it as a superior choice for sectors like chemical processing, heavy manufacturing, and outdoor installations where environmental resilience is paramount. The Type A tripping characteristic ensures comprehensive protection against a wider range of fault current types compared to basic Type AC devices. As part of Siemens' SENTRON protection device portfolio, it benefits from a reputation for quality, reliability, and advanced electrical engineering, making it a trusted component in sophisticated electrical systems.

Key Application Scenarios

This 4-pole RCCB is ideally suited for primary protective measures in industrial power distribution systems, ensuring safety for personnel and equipment. It is extensively used in control cabinets, machinery, and electrical installations requiring protection against earth faults, particularly where a 300mA sensitivity is specified for supplementary protection against fire hazards and indirect contact. The 80A rating makes it suitable for main distribution boards or branch circuits with significant loads. Its application extends to environments where standard RCCBs might be susceptible to nuisance tripping due to transient surges, thanks to its robust design.

Practical System Integration Guidance

Installation of the Siemens 5SV3647-6KK12 is facilitated by its standard DIN rail mounting and clear terminal markings. The device accepts solid or stranded conductors ranging from 0.75 mm² to 35 mm², with a recommended tightening torque of 2.5-3 N·m to ensure secure connections. The unit's four poles allow for complete isolation of all live conductors in a three-phase system, including the neutral, which is crucial for certain industrial loads and safety protocols. The ability to install supplementary devices further enhances its integration flexibility within complex control systems.

Operation and Risk Mitigation

The 5SV3647-6KK12 operates by continuously monitoring the balance of current flowing in the live and neutral conductors. If an imbalance exceeding 300mA occurs, indicating a leakage to earth, the device rapidly disconnects the circuit, preventing electric shock and fire risks. Its IP20 rating means it offers protection against solid objects larger than 12.5mm, but it must be installed within an appropriate enclosure for protection against moisture and dust. Regular testing of the RCCB's functionality via its integrated test button is recommended to ensure continued reliable operation.

Scalability & Long-Term Value

The Siemens 5SV3647-6KK12 is designed for compatibility with other Siemens SENTRON components and standard electrical switchgear, allowing for seamless integration into existing or future installations. Its ability to accept supplementary devices means that its protective functions can be expanded upon without requiring a complete system overhaul. This inherent flexibility and the product's robust build quality contribute to its long-term value, ensuring reliable performance and safety compliance over an extended operational lifespan.

Frequently Asked Questions (FAQs)

What is the primary function of the Siemens 5SV3647-6KK12?

This device acts as an earth leakage protection switch, detecting imbalances in current flow. It is designed to prevent electric shocks and fires caused by current leaking to earth.

It provides crucial safety for personnel and property by quickly interrupting faulty circuits. The 300mA tripping current is a standard for supplementary protection against fire.

Its core role is to enhance electrical system safety in industrial and commercial settings. It ensures compliance with stringent electrical safety regulations.

What does the 'SIGRES' designation mean for the 5SV3647-6KK12?

SIGRES indicates the product's special suitability for harsh ambient conditions. This includes environments with high humidity, dust, or corrosive elements.

This feature ensures enhanced reliability and a longer service life in demanding industrial settings. It's a key differentiator for applications where standard devices may fail prematurely.

You can expect superior performance and protection in challenging operational environments with SIGRES-rated devices. This makes it ideal for specific industrial sectors.

What type of fault currents can the 5SV3647-6KK12 detect?

The 5SV3647-6KK12 is a Type A RCCB. It can detect both sinusoidal AC fault currents and pulsating DC fault currents.

This Type A classification offers broader protection than basic Type AC devices. It is essential for modern electrical installations with electronic equipment.

It is important to select the correct type of RCCB based on the specific risks and equipment in your installation. Type A is a common and versatile choice.

Can the 5SV3647-6KK12 be used in a standard domestic installation?

While technically capable, this 80A, 4-pole industrial unit is typically specified for higher current loads. Its primary design focus is industrial applications.

For domestic use, lower amperage and potentially 2-pole versions are more commonly specified. Consult local electrical codes for residential requirements.

Selecting the appropriate rating and pole configuration is vital for safety and compliance in any installation. Always adhere to applicable standards.

What is the breaking capacity of the Siemens 5SV3647-6KK12?

The Siemens 5SV3647-6KK12 has a short-circuit current rating of 10 kA. This indicates its ability to safely interrupt fault currents up to this level.

It also has a breaking capacity current of 0.8 kA according to IEC 61008-1. This specifies its performance under specific fault conditions.

This breaking capacity ensures that the device can withstand and interrupt overcurrents resulting from short circuits before protective fuses operate. It protects itself and the downstream circuit.

What conductor sizes can be connected to the 5SV3647-6KK12?

This RCCB accepts both solid and stranded conductors. The minimum and maximum sizes are 0.75 mm² and 35 mm², respectively.

Properly sized conductors ensure efficient current transfer and prevent overheating. Secure connections are vital for reliable operation.

Always ensure the conductor size is appropriate for the circuit's load and complies with relevant electrical codes. Use the specified tightening torque.

Is the 5SV3647-6KK12 suitable for outdoor use?

The SIGRES version is designed for harsh conditions, but direct exposure to elements may still require additional enclosure protection. Its IP20 rating suggests it needs to be within a suitable enclosure.

An appropriate enclosure will provide the necessary protection against environmental factors like rain, dust ingress, and UV radiation. This ensures the longevity of the device.

Always consult the product's installation manual and local regulations for specific outdoor application requirements and necessary protective measures. Site conditions dictate enclosure needs.

What is the mechanical service life of this device?

The Siemens 5SV3647-6KK12 has a typical mechanical service life of 10,000 operating cycles. This is a standard for industrial-grade circuit protection devices.

This metric refers to the number of times the switch can be operated without mechanical failure. It signifies a robust and durable construction.

Proper operation and environmental conditions can influence the actual service life achieved in a specific installation. Regular testing is still advised.

Can I install supplementary devices with the 5SV3647-6KK12?

Yes, the 5SV3647-6KK12 is designed to allow for the installation of supplementary devices. This enhances its functionality and adaptability.

Supplementary devices can include things like auxiliary contacts or alarm signaling modules. These add advanced features to the basic protection.

This feature makes the device scalable, allowing for integration into more complex monitoring and control systems. It offers long-term value by supporting future system expansions.

What is the voltage rating for this Siemens earth leakage switch?

The rated supply voltage (Un AC) for the 5SV3647-6KK12 is 230/400V. This makes it suitable for standard industrial power systems.

It also has an insulation voltage (Ui) of 2000V. This ensures its ability to withstand electrical stress under normal and fault conditions.

The device is designed to operate reliably within these specified voltage parameters in industrial electrical infrastructure. Always ensure your supply voltage matches the device's rating.