Harmonized System
U.S. imports of Automatic Circuit Breakers, Voltage Exceeding 1,000 V but Less Than 72.5 kV (HS 853521) totaled $66.2M in August 2026, imported from 24 countries.
Importers of Automatic Circuit Breakers, Voltage Exceeding 1,000 V but Less Than 72.5 kV paid $2.3M in duties in August 2026, an average duty rate of 3.55% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Automatic Circuit Breakers, Voltage Exceeding 1,000 V but Less Than 72.5 kV imports of $66.2M in August 2026 ran 18% above the year-to-date monthly average of $56.1M.
Last updated: August 2026 dataMedium-voltage automatic circuit breakers in the 1 kV–72.5 kV range are critical protection and switching devices for utility substations, industrial power distribution, and renewable energy interconnection projects, where grid modernization and electrification investment are driving sustained demand. The entire heading resolves to a single 10-digit line (8535210000), so classification disputes typically involve distinguishing these from low-voltage breakers (below 1,000 V, heading 8536) or high-voltage breakers at or above 72.5 kV (heading 853529). Mexico and Canada are the leading US import sources — both USMCA partners — with South Korea, Italy, and Germany supplying specialized high-specification types.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
749 import shipments a month
The voltage rating boundary is determinative: 853521 covers breakers rated above 1,000 V but strictly below 72.5 kV. Breakers rated at 72.5 kV or above fall under heading 853529. The manufacturer's nameplate voltage rating and the applicable IEC or ANSI standard designation (e.g., IEC 62271-100 for high-voltage AC breakers) are the primary classification evidence.
Goods originating in Mexico or Canada that meet USMCA rules of origin are eligible for preferential tariff treatment under that agreement. Importers must obtain a valid USMCA certification of origin and ensure the product satisfies the applicable tariff-shift or regional-value-content requirement for heading 8535 before claiming the preference.
Subheading 2 of 6 in heading 8535
Subheading 853521 · $66.2M of $288.4M
Trade Directory
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ImportsExports
Imports
$66.2MYoY · free account
Exports
$6.8MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $571.4M of Automatic Circuit Breakers, Voltage Exceeding 1,000 V but Less Than 72.5 kV and exported $117.6M.
Through August 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8535210000 | Automatic Circuit Breakers, Gt 1000v But Lt 72.5kv | $65.8M | 3.55% | 30.75% | $2.3M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8535210000 | Automatic Circuit Breakers, Gt 1000v But Lt 72.5kv | $6.8M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · August 2026
origin
Canada and Mexico together supply 68% of it. South Korea pays 11.3% duty; Canada <0.1%.
customs district
destination
entry
rate provision · imports
68.8% enters free of duty; duty collected equals 3.55% of imports for consumption.