Alumina Ceramic Spool Insulator
A precision-machined spool-shaped insulator made from 95% alumina ceramic, used in electrical coils and transformers for wire support. It falls under HTS 8546.20.00 because it is a ceramic electrical insulator preventing current leakage in high-voltage applications.
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More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If considered electrical parts of machinery
Machinery-specific ceramic insulating parts may fall under 8548 if not general-purpose insulators.
If for industrial furnace ceramic supports
Non-electrical ceramic crucibles or supports are in 6909, lacking insulation purpose.
If made of composite materials like polymer-ceramic
Other material insulators (e.g., plastic composites) classify under 8546.90.00.
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Import Tips & Compliance
• Provide alumina content certification (>90%) to avoid reclassification as lower-grade ceramics
• Label with exact voltage rating and creepage distance; comply with IEC 60112 standards
Related Products under HTS 8546.20.00
Steatite Ceramic Bushing Insulator
A steatite ceramic bushing used in switchgear to insulate conductors passing through enclosures, with threaded metal ends for mounting. HTS 8546.20.00 applies as it is a ceramic electrical insulator for medium-voltage applications.
Zirconia Ceramic Stand-Off Insulator
A high-strength zirconia ceramic stand-off insulator for mounting busbars in electrical panels, resistant to thermal shock. It qualifies under HTS 8546.20.00 as a ceramic electrical insulator for industrial power distribution.
Silicon Carbide Surge Arrester Insulator
Porcelain housing for silicon carbide surge arresters protecting transformers from lightning, with high puncture resistance. Falls under HTS 8546.20.00 as the ceramic electrical insulator body.
Steatite Ceramic Terminal Block Insulator
Low-voltage steatite ceramic base for terminal blocks in control panels, isolating screw terminals. Classified HTS 8546.20.00 for ceramic electrical insulation preventing short circuits.
Alumina Ceramic Feedthrough Insulator
Hermetically sealed 99.5% alumina ceramic feedthrough for high-vacuum systems, passing conductors while maintaining insulation. HTS 8546.20.00 for this ceramic electrical insulator in RF/microwave applications.
Porcelain Pin-Type Insulator
Traditional porcelain pin insulator for distribution poles (11-33kV), screwed onto wooden crossarms. Ceramic construction qualifies under HTS 8546.20.00 for primary electrical insulation.