Siemens 5SV4612-0 Surge and Overvoltage Protection Device 2P 25A 300mA
The Siemens 5SV4612-0 Surge and Overvoltage Protection Device is a critical component for safeguarding electrical installations against transient overvoltages and fault currents. This 2-pole device, rated at 25A and with a sensitivity of 300mA, offers robust protection for sensitive equipment and personnel. Its primary advantages lie in its reliable performance, compact design, and seamless integration into standard electrical panels, making it an indispensable asset for industrial, commercial, and residential applications demanding high levels of electrical safety and equipment longevity.
Product Specifications
| Parameter | Specification |
| :------------------------- | :----------------------------------------------- |
| Product Type | Surge and Overvoltage Protection Device |
| Pole Configuration | 2-pole |
| Rated Current (In) | 25 A |
| Residual Current Rating | 300 mA |
| Voltage Rating (Un) | 230/400 V AC |
| Surge Current Rating (Iimp) | 5 kA |
| Max Continuous Operating Voltage (Uc) | 300 V AC |
| Protection Class | Type II |
| Frequency | 50/60 Hz |
| Tripping Current | 25 A |
| Color | White/Grey |
| Mounting Type | DIN Rail |
| Compliance | IEC/EN 61643-11, IEC/EN 61009-1, VDE 0664-20, VDE 0664-10 |
Core Features & Market Positioning
The Siemens 5SV4612-0 distinguishes itself through its advanced surge suppression technology, effectively clamping transient overvoltages to protect sensitive electronic components. Its residual current sensitivity of 300mA provides a crucial layer of safety against earth leakage faults, a common cause of fires and electrical shocks. Positioned as a reliable and cost-effective solution, it offers Type II surge protection, suitable for installations where direct lightning strikes are less probable but indirect surges and network disturbances are a concern. The device's robust construction and adherence to stringent international standards (IEC/EN 61643-11 and IEC/EN 61009-1) underscore its suitability for demanding industrial environments and its market standing as a dependable protective element.
Key Application Scenarios
This surge and overvoltage protection device finds extensive application in protecting critical infrastructure and sensitive equipment across various sectors. In industrial settings, it safeguards control systems, variable frequency drives, and automation components from damaging power surges and grid fluctuations. For commercial buildings, it protects lighting control systems, HVAC equipment, and IT infrastructure. In residential complexes, it enhances safety by protecting appliances, home electronics, and electrical wiring from overvoltage events, thereby reducing the risk of equipment failure and fire hazards. Its specific application is vital in areas prone to atmospheric disturbances or with unstable power grids.
Practical System Integration Guidance
Integrating the Siemens 5SV4612-0 into existing electrical systems is straightforward due to its standard DIN rail mounting. It should be installed in series with the protected circuit, typically at the distribution board level. For optimal performance and safety, connect the line and neutral conductors through the device terminals, ensuring correct polarity. The device’s 2-pole configuration means it interrupts both live and neutral conductors simultaneously during a fault. It is essential to ensure that the upstream circuit breaker or fuse is appropriately rated for the incoming power supply and complies with local electrical codes. Proper grounding of the system is also paramount for the effective operation of the surge protection functionality.
Operation and Risk Mitigation
The Siemens 5SV4612-0 operates by diverting transient overvoltages to ground, thereby limiting the voltage across the protected equipment to a safe level. In the event of a residual current fault exceeding 300mA, the device acts as a residual current device (RCD), tripping and disconnecting the circuit to prevent electrical shock and fire. A key aspect of risk mitigation is regular visual inspection of the device for any signs of damage or discoloration, which could indicate a past surge event or internal fault. While these devices are designed for long operational life, their performance can degrade over time or after significant surge events. Therefore, periodic testing and eventual replacement, as per manufacturer recommendations and local regulations, are critical for sustained protection.
Scalability & Long-Term Value
The Siemens 5SV4612-0 is designed for straightforward integration into modular electrical panel systems, allowing for easy scalability. Its standard form factor ensures compatibility with a wide range of Siemens and third-party distribution boards and switchgear. While this specific model provides essential surge and overcurrent protection, its long-term value is also realized through the extended lifespan it affords to connected equipment, minimizing costly downtime and replacement cycles. In environments increasingly reliant on digital infrastructure and IIoT connectivity, robust foundational electrical protection like that offered by the 5SV4612-0 is crucial for maintaining the integrity and availability of data and control systems.
Frequently Asked Questions
What is the primary function of the Siemens 5SV4612-0?
This device offers combined surge and overvoltage protection for electrical systems. It safeguards equipment from damaging voltage spikes and transient disturbances. It also provides residual current protection to prevent electrical shocks.
How does the 300mA sensitivity benefit my electrical installation?
A 300mA sensitivity ensures detection of significant earth leakage currents. This rating is ideal for preventing fires and protecting equipment from faults. It offers a higher level of safety than standard overcurrent protection alone.
What kind of overvoltages can the Siemens 5SV4612-0 protect against?
It protects against transient overvoltages originating from external sources like lightning. It also mitigates surges caused by switching operations within the power grid. The device is classified as a Type II protector.
Can I use the Siemens 5SV4612-0 for lightning protection?
While it offers surge protection against lightning-induced transients, it is primarily a Type II device. For direct lightning strikes, a Type I surge protective device is typically required upstream. This device complements comprehensive lightning protection strategies.
What is the maximum current rating this device can handle?
The Siemens 5SV4612-0 is rated for a nominal current of 25A. This means it is suitable for circuits with a continuous load of up to 25 amperes. Ensure upstream protection is correctly sized.
How do I install the Siemens 5SV4612-0?
Installation is done via a standard 35mm DIN rail. Connect the line and neutral conductors through the designated terminals. Ensure correct polarity and follow all local electrical codes and regulations.
What does "2P" mean in the product name?
"2P" signifies that the device is a 2-pole protector. This means it is designed to switch and protect both the live (L) and neutral (N) conductors of a single-phase circuit simultaneously.
Is this device suitable for industrial applications?
Yes, its robust design and protective capabilities make it suitable for industrial environments. It protects sensitive control systems and machinery from power quality issues prevalent in industrial settings.
What is the operating voltage limit for this surge protector?
The maximum continuous operating voltage (Uc) for the Siemens 5SV4612-0 is 300V AC. Operating above this voltage continuously can compromise the device's protective function and lifespan.
What happens if the Siemens 5SV4612-0 trips?
If the device trips, it indicates a fault condition, either a surge event or an earth leakage current. Investigate the cause of the trip before resetting the device. Continuous tripping suggests a persistent electrical issue requiring professional attention.
