The Siemens 3NA7824 is a low-voltage high rupturing capacity (LV HRC) fuse element designed to provide reliable overcurrent protection in industrial settings. This fuse link is rated for 80A and is suitable for both AC systems up to 500V and DC systems up to 250V, ensuring versatility across various applications. It features non-insulated grip lugs and a combination indicator for ease of installation and status checking.
Crafted to meet the stringent requirements of DIN EN 60269-1, the 3NA7824 is classified under the gG operating class, which signifies its capability to protect both cables and equipment against short circuits and overloads. The fuse link boasts a substantial switching capacity, with a rated value of 120kA according to IEC 60947-2 for AC and 25kA for DC, highlighting its robust interrupting capacity.
The design of the 3NA7824 includes a combination alarm indicator, which provides a clear visual signal in the event of a fuse operation, enhancing maintenance efficiency. Its non-insulated grip lugs facilitate straightforward mounting, and the fuse can be installed in any orientation, with vertical being preferred for optimal performance.
With an IP20 protection class when connected to conductors, the fuse link is safeguarded against the ingress of solid objects, ensuring continued operation in environments where contact with equipment is likely. The climatic class rating of -20 to +50 degrees Celsius at 95% relative humidity underlines the component's resilience in varying atmospheric conditions.
The Siemens 3NA7824 is a testament to reliable and efficient circuit protection, making it an essential component for industrial electrical safety and operational continuity.