U.S. imports of Noncurrent-Carrying Wiring Devices (NAICS 335932) totaled $91.1M in August 2026, imported from 62 countries.
Importers of Noncurrent-Carrying Wiring Devices paid $15.1M in duties in August 2026, an average duty rate of 16.75% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Noncurrent-Carrying Wiring Devices imports of $91.1M in August 2026 ran 14% above the year-to-date monthly average of $79.9M.
Last updated: August 2026 dataNAICS 335932 covers manufacturers of conduit bodies, junction boxes, cable trays, wireways, and other mechanical enclosures and fittings that protect and route electrical conductors without themselves carrying current. These products are essential infrastructure for commercial and industrial electrical installations and must meet NEC requirements for the environments in which they are installed — including ratings for wet locations, hazardous areas, or outdoor exposure. Steel and aluminum are the dominant materials, meaning Section 232 tariff considerations can affect input costs for domestic manufacturers and landed costs for importers.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
6.0K import shipments a month
Steel conduit, cable trays, and enclosures imported into the US may be subject to Section 232 tariffs on steel and aluminum articles, depending on the product's composition and country of origin. Country-specific exclusions and quota arrangements have been negotiated with certain trading partners, so importers should verify current Section 232 treatment for their specific HTS subheading and supplier country before finalizing sourcing.
NEMA enclosure ratings (e.g., NEMA 1 for indoor dry locations, NEMA 4X for outdoor or corrosive environments) and UL listings are the primary specifications buyers specify for noncurrent-carrying wiring devices. Imported products must carry the appropriate NRTL listing for the intended installation environment; mismatched ratings can result in NEC code violations and product liability exposure for distributors and contractors.
National industry 2 of 2 in naics industry 33593
National industry 335932 · $91.1M of $905.9M
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Imports · August 2026
origin
China and Mexico together supply 42% of it. China pays 38.2% duty; Canada 2.2%.
customs district
Census does not publish district detail for this classification system.
destination
Census publishes state breakdowns for NAICS to the 4-digit level only. See NAICS 3359 for those.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$91.1MYoY · free account
Exports
$69.5MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $914.8M of Noncurrent-Carrying Wiring Devices and exported $782.8M.
Through August 2026. Source: U.S. Census Bureau.