Product classification
HS code for Ceramic terminal block: 8547.10
Insulating fittings, of ceramics, for electrical machines, of insulating material only (except minor assembly parts), excluding those of heading no. 8546.
Classification of ceramic terminal block under HS 8547.10
The ceramic terminal block is classified under HS code 8547.10, which specifically covers insulating fittings for electrical machines, appliances, or equipment, provided they are made of ceramic materials. According to the General Rules of Interpretation (GRI) 1 and 6, classification is determined by the terms of the headings and any relative section or chapter notes. Heading 8547 is designated for insulating fittings for electrical purposes, other than insulators of heading 85.46. The ceramic body of the terminal block serves as the primary insulating component. While these blocks often contain metal connectors, screws, or terminals, they remain classified here because the metal parts are considered minor assembly components incorporated during the molding or casting process for the purpose of fixing or connecting. The ceramic material provides the essential character of electrical insulation and heat resistance required for high-temperature applications.
- Covers
- Ceramic terminal blocks for industrial furnaces
- High-temperature porcelain connector blocks
- Ceramic insulating bushings for electrical heaters
- Steatite terminal strips for domestic appliances
- Ceramic wire connectors for oven wiring
- Also under 8547.10
- Lapp Insulators ceramic bushings
- NGK Insulators ceramic posts
- MacLean Power Systems ceramic pin insulators
- PPC Insulators ceramic line posts
- Siemens ceramic components
Codes often confused with 8547.10
Common mistake. A frequent point of confusion involves HS code 8546.20, which covers electrical insulators of ceramics. The distinction lies in the application: 8546 is generally reserved for insulators used in power transmission or distribution lines (like suspension insulators), whereas 8547.10 is for fittings used within machines or equipment. Another common error is 8536.90, which covers electrical apparatus for switching or protecting circuits. If the item is viewed primarily as a connector rather than an insulating fitting, 8536 might be considered; however, if the insulating body is the predominant feature and it is designed for assembly into equipment, 8547.10 is the more specific classification.
Top exporters and importers of HS 854710 (the code used for ceramic terminal block), 2025
In 2025, the largest exporter of HS 854710 (the code used for ceramic terminal block) in UN Comtrade data was China, with 31% of world exports; the largest importer in UN Comtrade data was China, with 15% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 854710, not only ceramic terminal block.
Top exporters 2025 · share of world exports
- 1 China $304M 31% of world exports
- 2 Japan $193M 20% of world exports
- 3 Germany $120M 12% of world exports
World total: $977M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 China $118M 15% of world imports
- 2 United States $80M 10% of world imports
- 3 Taiwan* ~$63M 8.0% of world imports · partner records ↗
World total: $788M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. UN Comtrade records Taiwan as "Other Asia, not elsewhere specified". Saudi Arabia's exports under that code are left out: they are far too large to be trade with Taiwan, so mostly undisclosed partners. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for ceramic terminal block
Brazil classifies ceramic terminal block under NCM 8547.10.00: HS 8547.10 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about ceramic terminal block
What is the HS code for Ceramic terminal block?
The HS code for Ceramic terminal block is 854710 (Insulating fittings; of ceramics, for electrical machines, of insulating material only (except minor assembly parts), excluding those of heading no. 8546). The primary HS code for a ceramic terminal block used as an insulating fitting in electrical equipment is 8547.10.
How do I classify Ceramic terminal block for customs?
Ceramic terminal block is classified under HS code 854710 — Insulating fittings; of ceramics, for electrical machines, of insulating material only (except minor assembly parts), excluding those of heading no. 8546. This is a 6-digit subheading level code.
Does the presence of metal screws change the classification?
No, according to the Explanatory Notes to heading 8547, insulating fittings may contain incorporated metal parts (such as threaded sockets, pins, or screws) provided the fitting retains the essential character of an insulating product.
Which countries are the top exporters of ceramic terminal block (HS 854710)?
In 2025, the top exporters of HS 854710 (the code used for ceramic terminal block) in UN Comtrade data were China ($304M, 31% of world exports), Japan ($193M) and Germany ($120M). World exports came to about $977M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of ceramic terminal block (HS 854710)?
In 2025, the top importers of HS 854710 (the code used for ceramic terminal block) in UN Comtrade data were China ($118M, 15% of world imports), the United States ($80M) and Taiwan (about $63M). World imports came to about $788M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Ceramic terminal block the same in all countries?
The base HS code 854710 for Ceramic terminal block is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for ceramic terminal block in Brazil?
In Brazil, ceramic terminal block (HS 854710) is classified under NCM 8547.10.00.