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HSChapter 85
U.S. imports of variable resistors, rheostats & potentiometers (not elsewhere specified) (HS 853340) totaled $33.6M in April 2026, traded with 52 countries.
Importers of Variable Resistors, Rheostats & Potentiometers (Not Elsewhere Specified) paid $3.4M in duties in April 2026 — an effective duty rate of 15% on $22.1M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataNon-wirewound variable resistors — including cermet potentiometers, metal-glaze types, metal oxide varistors (MOVs), and rheostat-type motor starters — are classified here when they do not fall under the wirewound or carbon-film headings. Metal oxide varistors (8533404000) are a commercially significant subset, widely used as transient voltage suppressors in power supplies, surge protectors, and motor drives. Mexico and Japan are leading suppliers, with China also a major source subject to potential Section 301 tariff exposure.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Yes. MOVs have a dedicated 10-digit line (8533404000) within heading 853340, separate from cermet potentiometers (8533408050), metal-glaze potentiometers (8533408060), rheostat-type motor starters (8533408040), and the residual variable resistor line (8533408070). MOVs function as voltage-dependent resistors rather than manually adjustable devices, but they remain classified within this heading rather than as discrete semiconductor devices.
Rheostat and resistor-type motor starters and controllers are specifically provided for at 8533408040 within this heading. If the motor starter uses a different switching technology (e.g., contactors, solid-state drives), it would likely fall outside heading 8533 entirely and require classification under the appropriate switchgear or power electronics 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 % | Duty Collected |
|---|---|---|---|---|
| 8533408070 | VARIABLE RESISTORS, NESOI | $27.5M | 13.40% | $2.4M |
| 8533404000 | METAL OXIDE VARISTORS | $3.3M | 24.66% | $725K |
| 8533408050 | VARIABLE RESISTORS/ POTENTIOMETERS CERMET, NESOI | $1.8M | 18.40% | $182K |
| 8533408040 | RHEOSTAT & RESISTOR TYPE MOTOR STARTERS/CONTROLERS | $1.0M | 17.58% | $96K |
| 8533408060 | VARIABLE RESISTORS/POTENTIOMETERS, METAL GLAZE | $21K | 14.94% | $4K |
VARIABLE RESISTORS, NESOI
METAL OXIDE VARISTORS
VARIABLE RESISTORS/ POTENTIOMETERS CERMET, NESOI
RHEOSTAT & RESISTOR TYPE MOTOR STARTERS/CONTROLERS
VARIABLE RESISTORS/POTENTIOMETERS, METAL GLAZE
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8533400080 | VARIABLE RESISTORS, INCLUDING POTENTIOMETERS,NESOI | $33.8M |
| 8533400040 | RHEOSTAT & RESISTOR TYPE MOTOR STARTERS/CONTROLERS | $680K |
VARIABLE RESISTORS, INCLUDING POTENTIOMETERS,NESOI
15.4M no
RHEOSTAT & RESISTOR TYPE MOTOR STARTERS/CONTROLERS
224.6K no
MACH FOR RECP/CONVR/TRANS/REGN OF VOICE/IMAGE/DATA
HS 851762
SOLID-STATE NON-VOL SEMICONDUCTOR STORAGE DEVICES
HS 852351
SMARTPHONES
HS 851713
PROCESSORS AND CONTROLLERS, ELECTRONIC INTEG CIRCT
HS 854231
CONTROLS ETC W ELECT APPR F ELECT CONT NOV 1000 V
HS 853710
STATIC CONVERTERS; ADP POWER SUPPLIES
HS 850440
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $3.7M | $13.5M | +$9.7M |
| California | $7.3M | $3.9M | -$3.4M |
| Illinois | $3.7M | $837K | -$2.9M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| YSLETA, TX | $927K | $10.0M | +$9.1M |
| CLEVELAND, OH | $1.9M | $3.8M | +$1.9M |
| OTAY MESA, CA | $4.1M | $723K | -$3.4M |