U.S. imports of Electrical Circuit Protection Apparatus, Not Exceeding 1,000 V (NESOI) (HS 853630) totaled $93.2M in August 2026, imported from 64 countries.
Importers of Electrical Circuit Protection Apparatus, Not Exceeding 1,000 V (NESOI) paid $10.4M in duties in August 2026, an average duty rate of 11.22% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Electrical Circuit Protection Apparatus, Not Exceeding 1,000 V (NESOI) imports of $93.2M in August 2026 ran 17% above the year-to-date monthly average of $79.8M.
Last updated: August 2026 dataResidual low-voltage circuit protection apparatus — including motor overload protectors and other devices not classified as fuses or automatic circuit breakers — serves critical roles in motor control centers, industrial machinery, and building automation systems. Three US tariff lines cover this space: a general NESOI provision (8536300000), a dedicated motor overload protector line (8536304000), and a broader residual (8536308000). China is the leading supplier, followed by Mexico and the Philippines; Chinese-origin goods in this heading are subject to Section 301 tariff measures, and Vietnam and Czech Republic also appear among top sources, reflecting supply-chain diversification by multinational manufacturers. Correct classification between the motor overload protector line and the broader NESOI provisions is a recurring compliance issue.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
5.9K import shipments a month
Motor overload protectors rated at or below 1,000 V fall under heading 853630, specifically 8536304000. Those rated above 1,000 V are instead classified under heading 853590 (8535904000). The voltage threshold is the primary classification determinant, and importers should confirm the device's rated voltage from the manufacturer's technical documentation before filing.
Several major European electrical equipment manufacturers — particularly those producing motor protection and control devices — operate production facilities in the Czech Republic as a lower-cost EU manufacturing base. Vietnam's presence reflects broader electronics and electrical component assembly investment by multinational firms seeking to diversify away from China, particularly following Section 301 tariff exposure on Chinese-origin goods.
Subheading 6 of 10 in heading 8536
Subheading 853630 · $93.2M of $1.6B
ImportsExports
Imports
$93.2MYoY · free account
Exports
$29.7MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $936.9M of Electrical Circuit Protection Apparatus, Not Exceeding 1,000 V (NESOI) and exported $344.1M.
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 |
|---|---|---|---|---|---|
| 8536308000 | Electric Circuit Protection Apparatus, NESOI | $87.3M | 11.21% | 79.59% | $9.8M |
| 8536304000 | Motor Overload Protectors, For Voltage Lt=1000v | $5.3M | 11.35% | 79.81% | $598K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8536300000 | Electrical Circuit Protection Apps, Lt=1000v, NESOI | $29.7M |
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.
Trade Directory
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Imports · August 2026
origin
Mexico and China together supply 46% of it. China pays 22.1% duty; Mexico 2.5%.
customs district
destination
entry
rate provision · imports
19.8% enters free of duty; duty collected equals 11.22% of imports for consumption.