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HSChapter 91
U.S. imports of time switches with clock/watch movement or synchronous motor (HS 910700) totaled $5.5M in July 2026, traded with 28 countries.
Importers of Time Switches with Clock/Watch Movement or Synchronous Motor paid $553K in duties in July 2026 — an effective duty rate of 22% on $2.5M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataDefrost timers for household refrigerators and freezers (9107004040) and broader time switches valued at or under $5 (9107004080) share this heading with higher-value units (9107008000), making unit value a key classification variable. Mexico leads US imports under this heading — a supply pattern consistent with the country's deep integration into North American appliance and HVAC manufacturing supply chains — followed by China and Vietnam. Time switches are widely used in HVAC controls, lighting automation, and appliance defrost cycles, and their classification can overlap with Chapter 85 relay and switching gear when the timing function is secondary to the switching function.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
637 shipments/mo
Heading 9107 covers switches whose timing function is driven by a clock or watch movement or a synchronous motor — the timekeeping mechanism is integral to the article's identity. A timing relay in Chapter 85 typically uses electronic or electromechanical delay circuits rather than a horological movement. When the timing element is a microcontroller or RC circuit rather than a mechanical or synchronous-motor escapement, Chapter 85 is generally the correct destination.
The value breakpoint is applied to the customs value as appraised by CBP — generally transaction value under 19 U.S.C. § 1401a — not the list or invoice price alone. Importers should ensure their valuation methodology is consistent with CBP appraisement rules, particularly when related-party transactions or assists are involved.
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ImportsExports
Imports
$5.5MYoY · Pro
Exports
$2.0MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Subheading 1 of 1 in heading 9107
Subheading 910700 · $5.5M of $5.5M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 9107008000 | Time Switches With Clks/Watch Movement Etc,Ov $5 | $4.1M | 7.19% | 31.47% | $296K |
| 9107004080 | Time Switchs With Clk/Watch Movmt Etc,N/O $5,NESOI | $1.3M | 18.77% | 88.34% | $249K |
| 9107004040 | Defrost Timers for Household Refrig/Freezer N/0 $5 | $32K | 26.43% | 100.00% | $8K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 9107000000 | Time Switches W Clk/Wtch Movemnt/Synchronous Motor | $2.0M |
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 · July 2026
origin
Mexico and Thailand together supply 70% of it.
customs district
destination
entry
rate provision · imports
52.5% enters free of duty; the effective duty rate is 10.10%.