Siemens 5SV3111-6 Residual Current Earth Leakage Circuit Breaker 2P 16A 10mA

The Siemens 5SV1111-6 is a 2-pole, 16A residual current circuit breaker (RCCB) with a 10mA tripping current, designed for robust protection against earth leakage faults. This device stands out for its compact design, high breaking capacity, and reliable tripping characteristics, making it a cornerstone for electrical safety in residential, commercial, and light industrial applications. Its advanced tripping mechanism ensures rapid disconnection, effectively preventing electric shock and mitigating fire hazards caused by insulation failures.

Product Specifications

| Feature                 | Specification                                |

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

| Product Type            | Residual Current Circuit Breaker (RCCB)      |

| Poles                   | 2-Pole                                       |

| Rated Current (In)      | 16A                                          |

| Rated Residual Current  | 10mA                                         |

| Rated Voltage (Un)      | 230/400V AC                                  |

| Frequency               | 50/60 Hz                                     |

| Tripping Type           | Type AC                                      |

| Breaking Capacity (Icn) | 6 kA                                         |

| Protection Class        | IP20 (device), IP40 (enclosure)              |

| Operating Temperature   | -25 to +45 °C                                |

| Mounting Type           | DIN Rail (35mm)                              |

| Standards Compliance    | IEC/EN 61008-1                               |

Core Features & Market Positioning

The Siemens 5SV1111-6 distinguishes itself through its exceptional reliability and adherence to stringent international safety standards, including IEC/EN 61008-1. Its compact 2-module width facilitates space-saving installations in distribution boards, a critical advantage in modern electrical systems where space is often at a premium. The Type AC tripping characteristic ensures effective protection against sinusoidal alternating earth leakage currents, a common fault type in many environments. This RCCB is positioned as a high-quality, dependable solution for fundamental electrical safety, offering peace of mind to installers and end-users alike, backed by Siemens' long-standing reputation for robust electrical engineering.

Key Application Scenarios

This 16A, 10mA RCCB is ideally suited for safeguarding circuits in residential installations, protecting lighting and socket outlet circuits from dangerous earth faults. In commercial settings, it provides essential protection for office spaces, retail areas, and small workshops where personnel safety is paramount. Its sensitivity makes it particularly valuable for circuits powering sensitive electronic equipment, offering an additional layer of protection beyond standard overcurrent devices. The 2-pole configuration is standard for single-phase circuits, ensuring complete isolation of both live and neutral conductors during a fault event.

Practical System Integration Guidance

Installation of the Siemens 5SV1111-6 requires secure mounting onto a standard 35mm DIN rail within a suitable distribution enclosure. Ensure that the upstream protective device (e.g., miniature circuit breaker) is rated appropriately for the circuit and the RCCB's 16A nominal current. Wiring involves connecting the incoming line (L) and neutral (N) conductors to the designated terminals at the top of the device, and the outgoing protected conductors to the terminals at the bottom. Always ensure the neutral conductor connected to the RCCB is not switched or fused separately to maintain proper operation. A thorough test of the RCCB's functionality using its integrated test button is mandatory after installation and before commissioning.

Operation and Risk Mitigation

The Siemens 5SV1111-6 operates by continuously monitoring the current flowing through the live and neutral conductors. If an imbalance occurs, indicating current is leaking to earth (e.g., through a person or faulty insulation), the RCCB will trip, rapidly disconnecting the power supply. The 10mA sensitivity is crucial for preventing dangerous physiological effects of electric shock, offering direct protection to individuals. Regular testing via the built-in test button (typically labeled 'T') is essential to verify the operational integrity of the tripping mechanism and ensure continued safety. To reset the breaker after a trip, simply push the reset lever upwards after the fault condition has been rectified.

Scalability & Long-Term Value

While the 5SV1111-6 is a foundational protective device, its integration into larger Siemens electrical systems is seamless. It is compatible with a wide range of other Siemens modular devices, allowing for flexible and scalable distribution board designs. Its robust construction ensures a long service life, contributing to lower long-term maintenance costs. For advanced monitoring and integration into smart building or IIoT platforms, companion residual current monitoring units (RC MUs) or specialized communication-enabled circuit breakers can be used in conjunction with or as replacements in more sophisticated systems, though the 5SV1111-6 itself is a standalone mechanical device.

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Frequently Asked Questions (FAQs)

What is the primary function of the Siemens 5SV1111-6 RCCB?

This device is designed to detect earth leakage currents and rapidly disconnect the electrical supply, preventing electric shock hazards. It offers crucial protection against residual currents that standard circuit breakers do not address.

It provides an essential safety layer for personnel and equipment, especially in environments where insulation may be compromised or human contact with live parts is possible. The 10mA sensitivity is optimized for direct protection against dangerous shocks.

This RCCB acts as a vital safeguard, ensuring that electrical installations meet stringent safety regulations and minimize risks associated with electrical faults, thereby enhancing overall electrical system reliability.

Can the Siemens 5SV1111-6 be used for overload protection?

No, this RCCB is specifically designed for residual current (earth leakage) protection only. It does not provide overload protection for the circuit.

Overload protection must be provided by a separate miniature circuit breaker (MCB) or fuse upstream of the RCCB. The MCB or fuse protects against overcurrents due to excessive load or short circuits.

Therefore, it is essential to install the 5SV1111-6 in conjunction with an appropriately rated MCB to ensure comprehensive circuit protection against both earth faults and overcurrents.

How do I test the functionality of the Siemens 5SV1111-6?

You can test the functionality by pressing the integrated test button, typically marked with a 'T' or a test symbol, on the front of the device. This simulates an earth leakage fault.

Pressing the test button should cause the RCCB to trip, disconnecting the circuit. If it does not trip, the device may be faulty and should be replaced immediately by a qualified electrician.

It is recommended to perform this test periodically, usually monthly, to ensure the residual current protection remains effective and reliable for ongoing safety.