Medium Voltage Fuse

Although both are high-voltage current-limiting fuses, there are significant differences in their protection targets and rated current designs: XRNP Series: Specifically designed for the protection of Voltage Transformers (PT). Their rated currents are typically very small (e.g., 0.2A, 0.5A). They are engineered to quickly interrupt the circuit upon sensing minute internal faults within the transformer, preventing further damage or accidents. XRNT Series: Specifically designed for Power Transformer protection. They feature a much larger range of rated currents (up to 200A or higher) and are built to withstand the magnetizing inrush current that occurs when a transformer is energized. Recommendation: Interchanging the two is not recommended. XRNP fuses must be used for PT protection to ensure reliable operation even at extremely low fault currents, thereby safeguarding expensive transformer assets.

Our products are manufactured in strict accordance with IEC 60282-1 and GB 15166.2 standards. Dimensional Differences: While the electrical principles are identical, there are significant differences in physical dimensions (such as overall length and end-cap diameter) between the DIN and BS standards. For example, DIN standard fuses typically follow fixed installation lengths (such as 292mm or 442mm). Selection Tips: When replacing fuses in existing equipment, it is essential to verify the installation space of the fuse base/mount. We offer the XRNT series (compliant with German DIN specifications) and the BFY series (compliant with British BS specifications) to ensure compatibility with various switchgear and Ring Main Units (RMU) worldwide.