Thermoset Polyester Molded Busbar Insulator from Japan
Compression molded thermoset polyester insulator that supports and isolates copper busbars in switchgear assemblies of heading 8537. Exhibits high mechanical strength and track resistance for 600V applications. Molded specifically for electrical panel apparatus under 8538.90.60.00.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Certify compliance with NEMA grade specifications (e.g
• GPO-3) for electrical grade verification
• Document busbar dimensions and voltage ratings matched by insulator design
• Distinguish from general purpose polyester moldings through electrical property documentation