Steatite Ceramic HRC Fuse Body NH2
What is an NH2 fuse? What is the test performance of NH2 fuse ceramic body?
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Product Introduction
| Item | Feature | Test Standard |
| Content | Al2O3 99% | / |
| Dencity | 3.7 g/cm3 | GB/T 25995-2010 |
|
Mechanical Properties |
HV1 hardness (Gpa) 12 | GB/T 16534-2009 |
| Three point bending(Mpa) 350 | GB/T 6569-2006 | |
|
Thermal Characteristics |
Average Linear Thermal Expansion Coefficient （X10-6/K）7.2 | GB/T 16535-2008 |
| Thermal Conductivity(20°C) W（m*k）25 | GB/T 5598-2015 | |
| Electrical Properties | Volume resistivity(Ω*cm) ＞ 1014 | GB/T 5594-2015 |
| Breakdown strength(KV/mm) ≥12 | GB/T 5594-2015 | |
| Dielectric constant（1MHz） 9 | GB/T 5594-2015 | |
|
Dielectric Loss Positive Factor（1MHz）4X10-4 |
GB/T 5594-2015 |
The NH2 fuse is a type of NH fuse with a higher breaking capacity than the NH00 and NH0 fuse sizes. Its ceramic body undergoes several performance tests according to international standards, such as IEC 60269-1 and DIN VDE 0636. These tests include high-voltage withstand, short-circuit, temperature rise, and mechanical strength tests. The ceramic body must be able to withstand high voltage, break the rated short-circuit current, operate within a specified temperature range, and withstand mechanical stresses without failure. The manufacturing process must be carefully controlled to ensure the finished product meets these stringent requirements. The test performance requirements are critical to ensuring the safe and reliable operation of high-power electrical systems.
The main component of the Steatite Ceramic HRC Fuse Body NH2 is alumina (Al2O3), which functions as the primary constituent of the NH2 fuse ceramic body. The purpose of a fuse is to provide overcurrent protection in an electrical circuit, to prevent circuit overload or short-circuit conditions that may cause equipment damage or safety hazards such as fires. As the core component of the fuse, the ceramic body needs to possess high strength, high insulation, and high-temperature resistance to ensure that the fuse can function normally and break the circuit quickly in case of a fault. Therefore, alumina, as a material, plays an important role in high-power electrical systems.
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