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HSChapter 85
U.S. imports of parts for electrical circuit apparatus and control or distribution boards (nesoi) (HS 853890) totaled $416.0M in June 2026, traded with 85 countries.
Importers of Parts for Electrical Circuit Apparatus and Control or Distribution Boards (NESOI) paid $46.4M in duties in June 2026 — an effective duty rate of 17% on $279.6M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: June 2026 dataPrinted circuit assemblies, molded parts, electrical metal contacts, automatic circuit breaker parts, and switchgear parts for apparatus in headings 8535, 8536, and 8537 all fall within this broad parts heading. The US schedule is highly detailed, with twelve 10-digit lines that distinguish printed circuit assemblies (8538901000, 8538903000), non-PC assemblies (8538904000), molded parts (8538906000), circuit breaker parts (8538907020/8538908120), metal contacts (8538907040/8538908140), and switchgear parts (8538907060/8538908160), among others. Mexico leads import supply, with China and Germany also significant — and Chinese-origin goods are subject to Section 301 tariffs. Correct classification requires identifying both the part type and the specific parent apparatus heading (8535, 8536, or 8537) for which the part is suitable.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Parts that are solely or principally suitable for use with apparatus in headings 8535, 8536, or 8537 classify under 8538 per the General Rules of Interpretation and the relevant chapter notes. If a part is equally suitable for apparatus in multiple headings, the importer should identify the primary intended use. Parts with broader applicability — such as generic fasteners or standard electronic components — may classify elsewhere under their own headings.
CBP may request technical datasheets confirming the contact material (typically silver, gold, or copper alloy), contact geometry, and the specific apparatus (circuit breaker, relay, contactor) for which the contacts are designed. A supplier declaration or engineering specification linking the contacts to apparatus in headings 8535–8537 strengthens the classification position and reduces the risk of reclassification to a base-metal parts heading.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8538908180 | PARTS FOR USE WITH APPS IN 8535,8536 OR 8537,NESOI | $172.2M | 11.26% | 67.39% | $19.4M |
| 8538903000 | PC ASSEMBLIES, FOR USE W. HEAD 8535-37, NESOI | $60.1M | 9.71% | 57.31% | $5.8M |
| 8538908120 | AUTOMATIC CIRCUIT BREAKER PARTS | $57.7M | 15.06% | 90.13% | $8.7M |
| 8538906000 | MOLDED PTS SUIT FOR USE WITH APT IN 8535,8536,8537 | $55.0M | 9.30% | 54.43% | $5.1M |
| 8538908140 | ELECTRICAL METAL CONTACTS FOR HEADING 8535, 36, 37 | $30.6M | 11.96% | 65.90% | $3.7M |
| 8538908160 | SWITCHGEAR PARTS, FOR HD 8535,36,37, NESOI | $25.0M | 9.27% | 57.61% | $2.3M |
| 8538901000 | PRINTD CIRCUIT ASSMBLIES OF 8537 U.S NOTE 12 CH 85 | $14.6M | 8.81% | 81.78% | $1.3M |
| 8538904000 | ASSMB O/T PC FOR 8535.90.40,8536.30.40,8536.50.40 | $843K | 11.91% | 84.60% | $100K |
PARTS FOR USE WITH APPS IN 8535,8536 OR 8537,NESOI
PC ASSEMBLIES, FOR USE W. HEAD 8535-37, NESOI
AUTOMATIC CIRCUIT BREAKER PARTS
MOLDED PTS SUIT FOR USE WITH APT IN 8535,8536,8537
ELECTRICAL METAL CONTACTS FOR HEADING 8535, 36, 37
SWITCHGEAR PARTS, FOR HD 8535,36,37, NESOI
PRINTD CIRCUIT ASSMBLIES OF 8537 U.S NOTE 12 CH 85
ASSMB O/T PC FOR 8535.90.40,8536.30.40,8536.50.40
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8538907080 | PRTS SUITBL FOR USE W/APPS IN 8535,8536,8537,NESOI | $535.5M |
| 8538907040 | ELECTRICAL METAL CONTACTS FOR HEAD 8535,8536,8537 | $86.5M |
| 8538907020 | AUTO CIR BREAKER PARTS FOR HEAD 8535/8536/8537 | $59.1M |
| 8538907060 | SWITCHGEAR PARTS FOR HD 8535, 8536, 8537, NESOI | $24.3M |
PRTS SUITBL FOR USE W/APPS IN 8535,8536,8537,NESOI
661.0M no
ELECTRICAL METAL CONTACTS FOR HEAD 8535,8536,8537
996.4K kg
AUTO CIR BREAKER PARTS FOR HEAD 8535/8536/8537
134.8M no
SWITCHGEAR PARTS FOR HD 8535, 8536, 8537, NESOI
3.1M no
STATIC CONVERTERS; ADP POWER SUPPLIES
HS 850440
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $69.9M | $339.7M | +$269.8M |
| California | $37.5M | $50.7M | +$13.2M |
| Arizona | $23.3M | $41.0M | +$17.7M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| YSLETA, TX | $20.0M | $270.4M | +$250.4M |
| LAREDO, TX | $26.2M | $71.6M | +$45.4M |
| NOGALES, AZ | $29.5M | $52.8M | +$23.3M |