SIEMENS 3NA3824 80A NH-Fuse Link size NH000 gG 500V AC Front Indicator
The SIEMENS 3NA3824 is a high-performance NH-Fuse Link, specifically a size NH000, rated for 80A and 500V AC, featuring a front indicator for enhanced operational visibility. This fuse link is engineered for superior protection of electrical installations, offering robust overload and short-circuit safeguarding critical for industrial environments. Its gG (general purpose) classification ensures reliable and fast-acting interruption of fault currents, minimizing damage to sensitive equipment and ensuring personnel safety. The front indicator provides an immediate visual cue of tripped status, streamlining maintenance and troubleshooting processes.
Product Specifications
| Specification | Value |
| :------------------------ | :---------------------------------- |
| Manufacturer | Siemens |
| Product Number | 3NA3824 |
| Fuse Type | NH-Fuse Link |
| Size | NH000 |
| Rated Current | 80A |
| Rated Voltage | 500V AC |
| Breaking Capacity (Icu) | 100 kA |
| Tripping Characteristic | gG (General Purpose) |
| Indicator | Front Indicator |
| Material | Ceramic |
| Termination Type | Bolted Tag |
| Dimensions (H x W x D) | 73 mm x 22 mm x 56 mm |
| Operating Temperature | -40 °C to +55 °C |
| Standards Compliance | IEC 60269-2, DIN VDE 0636-201, VDE |
Core Features & Market Positioning
The SIEMENS 3NA3824 distinguishes itself through its robust construction and reliable performance, positioning it as a preferred choice for demanding industrial applications. Its superior breaking capacity of 100 kA ensures it can safely interrupt even severe short-circuit events, offering a higher level of protection compared to lower-rated fuses. The integration of a front indicator is a key differentiator, providing instant visual feedback on the fuse's operational status, which significantly reduces downtime during fault diagnosis and replacement procedures. This feature enhances operational efficiency and safety in environments where quick problem identification is paramount. Siemens' reputation for quality and adherence to stringent international standards, such as IEC 60269-2 and DIN VDE 0636-201, further solidifies its market standing as a dependable component in electrical protection systems.
Key Application Scenarios
This NH-Fuse Link is ideally suited for safeguarding main and branch feeders in industrial power distribution systems, protecting transformers, and securing motor circuits. Its 80A rating and 500V AC capability make it a versatile solution for a wide range of medium-voltage applications and primary distribution boards within manufacturing plants, process industries, and large commercial facilities. The gG characteristic ensures it provides efficient protection against both prolonged overloads and immediate short circuits, critical for preventing equipment damage and minimizing costly production stoppages. Applications frequently include protection for power supplies in machine tools, control cabinets, and heavy machinery where reliable, rapid fault interruption is essential.
Practical System Integration Guidance
Integrating the SIEMENS 3NA3824 fuse link is straightforward within compatible NH fuse switch disconnectors and fuse bases designed for NH000 size. Ensure the power supply is de-energized before any handling. When installing, align the fuse link's bolted tags with the contacts of the fuse holder and firmly press it into place. The front indicator should be clearly visible for post-trip assessment. Proper torque should be applied to the terminal connections if applicable, following manufacturer guidelines to ensure secure electrical contact and prevent overheating. Always verify the rated voltage and current of the connected equipment do not exceed the fuse link's specifications.
Operation and Risk Mitigation
The SIEMENS 3NA3824 operates by sensing excessive current, which causes an internal element to melt and break the circuit, thereby protecting downstream equipment. The front indicator mechanism is designed to visually signal when the fuse has blown, typically by a projection or change in color visible from the exterior of the fuse holder. This immediate visual confirmation is crucial for risk mitigation, allowing maintenance personnel to quickly identify the faulty circuit without guesswork. To mitigate risks, always ensure that the fuse link's rating (80A, 500V AC, gG) is appropriate for the circuit it protects. Never attempt to bypass or replace a blown fuse with a higher-rated or incorrect type, as this can lead to catastrophic equipment failure or fire. Regularly inspect fuse holders for signs of wear or damage.
Scalability & Long-Term Value
The SIEMENS 3NA3824 offers excellent long-term value due to its robust design and compatibility with Siemens' extensive range of electrical distribution and protection components. Its standardized NH000 size and connection methods ensure seamless integration into existing Siemens infrastructure and many other manufacturers' switchgear, providing flexibility for future system upgrades or expansions. While the fuse link itself is a non-upgradeable protective device, its reliable performance contributes to the overall longevity and stability of the electrical system by preventing damage. The availability of such a high-quality, standardized component reduces the total cost of ownership through reduced maintenance and fewer unexpected equipment failures.
Frequently Asked Questions
What is the primary function of the SIEMENS 3NA3824 fuse link?
The SIEMENS 3NA3824 primarily serves as a protective device against overcurrents and short circuits. It is designed to safeguard electrical equipment and installations from damage caused by excessive current flow, ensuring operational safety.
How does the front indicator on the SIEMENS 3NA3824 function?
The front indicator on the SIEMENS 3NA3824 provides a clear visual signal when the fuse link has tripped due to a fault. This immediate visual feedback simplifies troubleshooting and reduces the time needed to identify and replace a blown fuse.
What are the key technical specifications of the SIEMENS 3NA3824 fuse link?
The SIEMENS 3NA3824 is an 80A, 500V AC, NH000 size fuse link with a gG tripping characteristic. It boasts a high breaking capacity of 100 kA, ensuring robust protection.
What does the 'gG' rating signify for the SIEMENS 3NA3824?
The 'gG' rating indicates that the SIEMENS 3NA3824 is a general-purpose fuse link suitable for protecting cables and conductors. It offers protection against both overloads and short circuits.
Can the SIEMENS 3NA3824 be used in DC applications?
The SIEMENS 3NA3824 is rated for AC voltage and is not intended for DC applications. Using it in DC circuits could lead to unpredictable performance and safety hazards.
What is the breaking capacity of the SIEMENS 3NA3824 fuse link?
The SIEMENS 3NA3824 fuse link has a substantial breaking capacity of 100 kA. This high rating ensures it can safely interrupt fault currents even in severe short-circuit conditions.
Is the SIEMENS 3NA3824 compatible with all NH fuse holders?
The SIEMENS 3NA3824 is designed for NH000 size fuse holders. Compatibility depends on the specific dimensions and contact design of the fuse holder.
What is the recommended operating temperature range for the SIEMENS 3NA3824?
The SIEMENS 3NA3824 is designed to operate reliably within a temperature range of -40 °C to +55 °C. Performance may be affected outside these limits.
How should the SIEMENS 3NA3824 be replaced after a fault?
To replace the SIEMENS 3NA3824, first ensure the circuit is de-energized. Then, carefully remove the blown fuse and insert a new, identical fuse link into the compatible fuse holder.
What standards does the SIEMENS 3NA3824 comply with?
The SIEMENS 3NA3824 complies with key international and German standards, including IEC 60269-2, DIN VDE 0636-201, and VDE. This ensures its reliability and safety.
