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| Country of Origin | India |
|---|---|
| Voltage | 600, 700V ac |
| Diameter | 10mm |
| Brand | Siemens |
| Model | 3NC1003 |
| Overall Length | 38mm |
| Current Rating | 3A |
| Series | SITOR |
| Standards/Approvals | CSA |
| Fuse Size | 10 x 38 mm |
| Application Category | aR |
| Operating Class | aR (full-range semiconductor protection) |
The Siemens SITOR Semiconductor Protection Cartridge Fuse 3NC1003 is a robust 3A fuse specifically engineered for safeguarding sensitive semiconductor components within industrial and electrical installations. Featuring a full-range aR operating class, it provides reliable overcurrent protection for devices such as semiconductor contactors, electronic relays, converters, and UPS systems. Its compact cylindrical design, with a 10 x 38 mm form factor, enables easy integration into standard fuse holders and distribution panels.
This fuse operates at a high voltage range of 600 to 700V AC, ensuring compatibility with a variety of advanced power circuits, including DC intermediate circuits and softstarters for motors up to 100A. The SITOR series is distinguished for its high interruption capacity and fast response characteristics, making it ideal for protecting electronic circuits from damage caused by surges, overloads, and short circuits. The aR category indicates suitability for semiconductor device protection, emphasizing its role in preventing costly downtime and equipment failures.
The 3NC1003 fuse is manufactured to meet stringent international standards, including IEC 60269-4 and CSA approvals. Its 10 mm diameter and 38 mm length allow for secure mounting while ensuring low thermal resistance and stable operational performance. The product is globally recognized for its quality, reliability, and safety, suitable for installations requiring consistent protection of high-value electronic assets.
Common use cases include protecting solid-state relays, input circuits, DC buses in power converters, and AC distribution in UPS systems. The Siemens SITOR fuse is also deployed in advanced industrial environments, commercial electrical panels, and manufacturing facilities where semiconductor-based control requires precise and durable protection solutions.
Browse more SITOR fuses and Siemens protection solutions in the Electrical Fuse category for comprehensive power distribution and circuit safety options.
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