S&C Electric SM-4 Fuse

SM-4 series 34.5kV fuses for padmount switchgear, offering superior current limitation. Fits HTS 8535.10.00 as high-voltage fuses for electrical circuits.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China2.7%+35.0%37.7%
🇲🇽Mexico2.7%+10.0%12.7%
🇨🇦Canada2.7%+10.0%12.7%
🇩🇪Germany2.7%+10.0%12.7%
🇯🇵Japan2.7%+10.0%12.7%

More Specific Codes

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Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8544.49Lower: 13.9% vs 37.7%

If insulated cables with integral fuses

Fuses fused into high-voltage cables classify under insulated wire parts.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

• Submit IEEE C37.47 test reports proving 34.5kV capability

• Avoid import with switchgear assemblies to prevent 8537 classification

• Declare SF6-free status if applicable for environmental compliance