Siemens 5SV3642-4 Leakage protection switch 4P 25A 300mA

The Siemens 5SV3447-6 is a robust 4-pole, 80A, 100mA leakage protection switch, engineered for superior electrical safety and system reliability. This device stands out for its high breaking capacity, ensuring swift disconnection during fault conditions, and its advanced tripping sensitivity, which precisely detects residual currents to prevent electrical hazards. Designed for demanding industrial environments, it offers exceptional durability and consistent performance, making it a cornerstone for safeguarding personnel and equipment.

| Parameter           | Specification                                       |

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

| Product Type        | Leakage Protection Switch (RCD/RCBO)                |

| Pole Configuration  | 4-Pole (3-Phase + Neutral)                          |

| Rated Current (In)  | 80A                                                 |

| Rated Residual Current (IΔn) | 100mA                                              |

| Breaking Capacity (Icn) | Typically 6 kA (confirm specific model datasheet) |

| Voltage Rating      | 400V AC (typical for 4-pole devices)                |

| Frequency           | 50/60 Hz                                            |

| Tripping Type       | Type AC (or Type A, B – confirm specific variant) |

| Operating Temperature | -25°C to +45°C (typical range)                     |

| Protection Class    | IP20 (device body)                                  |

| Mounting            | DIN Rail (35mm)                                     |

| Compliance          | IEC/EN 61008-1, IEC/EN 60947-2 (typical standards)  |

Core Features & Market Positioning

The Siemens 5SV3447-6 excels in providing reliable protection against earth faults and indirect contact in complex electrical installations. Its 4-pole design is crucial for correctly disconnecting all live conductors, including the neutral, in three-phase systems, thereby enhancing safety and preventing system imbalances during fault events. The 100mA sensitivity is optimized for equipment protection, offering a balance between preventing damage from persistent leakage currents and minimizing nuisance tripping. Siemens' reputation for quality and engineering excellence underpins the 5SV3447-6's market position as a dependable component in industrial power distribution and control systems. Its robust construction and adherence to stringent international standards (such as IEC/EN 61008-1) ensure long-term operational integrity and safety compliance.

Key Application Scenarios

This leakage protection switch is ideally suited for protecting three-phase equipment in various industrial settings. Common applications include safeguarding motors, pumps, large machinery, and control cabinets where reliable earth fault detection is paramount. Industries such as manufacturing, processing plants, and building services management benefit from its ability to prevent electrical fires and protect sensitive electronic components from surge damage caused by leakage currents. The 80A rating makes it suitable for circuits with significant power demands, ensuring protection without compromising operational continuity for connected loads.

Practical System Integration Guidance

Integrating the Siemens 5SV3447-6 into existing or new electrical panels is straightforward due to its standard DIN rail mounting. Proper wiring is essential: the incoming live conductors (L1, L2, L3) and the neutral conductor (N) connect to the upper terminals, while the outgoing protected conductors are connected to the lower terminals. Ensure that the neutral conductor is also switched by the device. For optimal performance and safety, connect the switch within the main distribution board or sub-distribution boards to provide downstream protection. It's critical to verify the incoming voltage and frequency match the switch's specifications before energizing the circuit. Always adhere to local electrical codes and standards during installation.

Operation and Risk Mitigation

The Siemens 5SV3447-6 operates by continuously monitoring the balance of current flowing through the live and neutral conductors. If an imbalance exceeding 100mA occurs – indicating a leakage current to earth – the switch rapidly trips, interrupting the circuit. This action mitigates risks such as electric shock, fire hazards, and damage to electrical equipment. In the event of a fault, the test button (usually marked 'T') should be pressed periodically (monthly recommended) to ensure the tripping mechanism is functioning correctly. If the switch trips repeatedly, a thorough investigation of the downstream electrical system is necessary to identify the source of the leakage, which could be insulation degradation, faulty wiring, or equipment malfunction.

Scalability & Long-Term Value

While the Siemens 5SV3447-6 is a standalone protective device, its value extends through its compatibility with Siemens' broader range of industrial electrical components and systems. It integrates seamlessly into standard modular switchgear assemblies, allowing for future expansion or upgrades of distribution boards. Its robust design ensures a long service life, minimizing replacement costs and contributing to the overall reliability of the electrical infrastructure. For facilities moving towards digitalization, its integration into a system allows for potential monitoring of trip events if paired with appropriate communication modules or smart meter solutions, aligning with Industry 4.0 initiatives.

Frequently Asked Questions

What is the primary function of the Siemens 5SV3447-6?

This switch provides essential protection against earth faults and indirect contact. It detects leakage currents and rapidly disconnects power.

This device safeguards personnel from electric shock hazards. It also protects equipment from damage caused by insulation failures.

Its reliable operation ensures compliance with safety regulations and reduces the risk of electrical fires.

How is the Siemens 5SV3447-6 installed in a three-phase system?

Install it on a standard 35mm DIN rail in your electrical panel. Ensure proper termination of all four conductors: L1, L2, L3, and N.

Connect the incoming supply conductors to the upper terminals and outgoing conductors to the lower terminals. The neutral conductor must be connected.

Always follow local electrical codes and manufacturer guidelines for safe and compliant installation procedures.

What maintenance is required for this leakage protection switch?

Regularly test the switch using its integrated test button, typically monthly. This verifies the tripping mechanism is functional.

Visually inspect the switch for any signs of damage or overheating. Ensure terminals are clean and connections are tight.

If the switch trips frequently, troubleshoot the protected circuit for the source of leakage; do not ignore repeated tripping events.

Can the Siemens 5SV3447-6 be used for overcurrent protection?

No, this specific model is primarily a leakage protection switch. It does not provide overcurrent or short-circuit protection.

For combined overcurrent and leakage protection, you would need a Residual Current Circuit Breaker with Overcurrent protection (RCBO).

Always pair this device with appropriately rated miniature circuit breakers (MCBs) for complete circuit protection.

What does the 100mA residual current rating signify?

It means the switch will trip if it detects a leakage current of 100 milliamperes or more. This is a sensitivity level for equipment protection.

A 100mA rating is suitable for preventing damage to machinery and reducing fire risks. It's less sensitive than personal protection devices (e.g., 30mA).

It ensures that significant leakage currents that could damage sensitive electronics or cause overheating are quickly interrupted.

What is the significance of the 4-pole configuration?

A 4-pole switch is designed for three-phase circuits with a neutral conductor. It switches all four conductors simultaneously.

This ensures complete isolation of the circuit when a fault occurs, preventing dangerous voltage conditions on the neutral line.

It is essential for balanced three-phase systems to maintain system integrity and safety during fault events.

What type of electrical faults does this switch detect?

It detects earth leakage faults, where current flows from a live conductor to earth. This is often due to insulation failure.

It also protects against indirect contact, where a person touches a conductive part that has become live due to a fault.

The switch is sensitive to imbalances between the live and neutral conductors' current.

Is the Siemens 5SV3447-6 suitable for residential use?

Generally, 100mA RCDs are not standard for residential primary protection. Residential settings typically use 30mA RCDs for personal protection.

This 80A, 100mA switch is more common in industrial or commercial applications for equipment protection. It may be used in specific sub-circuits if local codes allow.

Always consult electrical regulations and a qualified electrician to determine the appropriate protection devices for any installation.

What are the environmental operating conditions for this switch?

It is designed for operation within a typical ambient temperature range, often -25°C to +45°C. Refer to the datasheet for precise limits.

The device has an IP20 protection rating, meaning it is protected against solid objects larger than 12mm but not against water ingress.

It should be installed in a clean, dry environment protected from dust, moisture, and corrosive substances.

Where can I find the exact technical specifications for the Siemens 5SV3447-6?

Refer to the official Siemens product datasheet for the most accurate and detailed technical specifications. These are usually available on the Siemens Industry website.

The datasheet will confirm specific breaking capacities, tripping characteristics, and compliance standards for your exact model variant.

Always use the datasheet for final design and installation decisions to ensure full compliance and safety.