Transformer Bobbin Assembly
High-temperature plastic bobbins with integrated winding pins and terminals, specifically engineered for transformer coil assembly in switch-mode power supplies. Classified under HTS 8504.90.96.46 as other transformer parts due to dedicated transformer function. Provides structural support and electrical isolation for windings.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If generic plastic bobbins adaptable for multiple electrical uses
General plastic articles of other shapes fall under Chapter 39 rather than transformer-specific parts.
If classified as cores rather than mounting components
Certain wound cores have specific subheadings separate from bobbin assemblies.
If when imported as part of complete electrical apparatus assemblies
Parts of assemblies containing multiple Chapter 85 functions may classify under assembled apparatus.
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Import Tips & Compliance
• Document flammability ratings (UL94 V0/V1) and dielectric strength specifications required for transformer safety certification
• Provide evidence of exclusive transformer use through OEM specifications to prevent reclassification as general plastic parts
• Watch for minimum import quantities that trigger formal entry requirements and bonding needs
Related Products under HTS 8504.90.96.46
Transformer Mounting Bracket Kit
Stamped steel brackets with pre-drilled holes and isolation grommets designed specifically for securing power transformers in consumer electronics chassis. Falls under HTS 8504.90.96.46 as other transformer parts due to dedicated mounting function. Ensures proper heat dissipation and vibration isolation.
Transformer Terminal Block Assembly
Ceramic-based terminal blocks with high-voltage spacing and solderable pins specifically for power transformer secondary windings. Classified under HTS 8504.90.96.46 as other transformer parts due to electrical connection function. Rated for 600V+ operation in industrial transformers.
Transformer Vibration Isolation Mount
Neoprene rubber mounts with threaded studs designed specifically for isolating transformer vibration in HVAC equipment. Classified HTS 8504.90.96.46 as other transformer parts due to noise/vibration suppression function. Rated for 500+ lb transformer loads.
Transformer Core Clamp Assembly
High-strength steel clamp bands with bolt hardware and insulation washers for securing transformer core laminations under compression. HTS 8504.90.96.46 classification as other transformer parts maintains core stack integrity. Designed for 10kV+ distribution transformers.
Transformer Temperature Sensor Mount
Bimetallic thermal mounts with embedded thermocouples specifically positioned for transformer hot-spot temperature monitoring. Classified under HTS 8504.90.96.46 as other transformer parts for thermal protection function. Critical for preventing thermal runaway failures.
Toroidal Transformer Core Laminations
Stamped and insulated steel laminations designed specifically for assembly into toroidal transformer cores used in power supplies. These parts fall under HTS 8504.90.96.46 as other parts of transformers, distinct from complete cores or windings. They enable efficient magnetic flux in high-performance transformers.