Commonly known as suspension, pin-type or line post insulators
Electrical insulators of any material: > Of ceramics > Used in high-voltage, low-frequency electrical systems: > Commonly known as suspension, pin-type or line post insulators
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 8546.20.00.30
Porcelain Suspension Insulators
High-voltage porcelain suspension insulators designed for suspending overhead power transmission lines, typically rated 69kV to 230kV. These ceramic insulators provide electrical insulation and mechanical support in low-frequency AC systems. Classified under 8546.20.00.30 as suspension-type ceramic insulators for high-voltage applications.
Pin-Type Porcelain Insulators
Ceramic pin-type insulators for supporting overhead distribution lines up to 33kV, featuring a single pin mounting design. These provide both insulation and mechanical attachment for crossarms in low-frequency systems. Meets HTS 8546.20.00.30 as pin-type ceramic insulators for high-voltage use.
Line Post Porcelain Insulators
Station post ceramic insulators for vertical mounting on utility poles, rated 15kV to 69kV for distribution substations. These provide cantilever strength for line support in high-voltage, low-frequency circuits. Specifically covered by HTS 8546.20.00.30 as line post insulators.
69kV Suspension Disc Insulators
Porcelain disc suspension insulators rated at 69kV, used in strings for overhead transmission towers. Each cap-and-pin unit provides high mechanical strength and contamination resistance. Classified under 8546.20.00.30 for suspension-type ceramic high-voltage insulators.
Horizontal Line Post Insulators
Ceramic horizontal line post insulators for 46kV distribution, featuring trunnion mounting for crossarm applications. Designed for high mechanical load and electrical reliability in low-frequency systems. HTS 8546.20.00.30 covers these as line post ceramic insulators.
ANSI C29.2 Suspension Insulators
Standard porcelain suspension insulators conforming to ANSI C29.2 specifications for 115kV transmission lines. Fog-type design resists surface contamination and provides superior flashover protection. Specifically identified under HTS 8546.20.00.30 as suspension insulators.