NAICS 335313

Overview

Federal statistical programs classify establishments using the North American Industry Classification System (NAICS), a production-oriented taxonomy developed under the Office of Management and Budget (OMB). NAICS was adopted in 1997 to replace the Standard Industrial Classification (SIC) and was developed jointly by the U.S., Canada, and Mexico to support comparability across North America. The latest structure in use is NAICS 2022. ¹

NAICS 335313 covers establishments primarily engaged in manufacturing switchgear and switchboard apparatus. Examples include power circuit breakers, power distribution control panels, switchboard ducts, power switching equipment, electric fuses, and electric power switches (other than pushbutton, snap, solenoid, or tumbler types). Cross-references direct relays to NAICS 335314, electronic-application switches to NAICS 334419, and pushbutton/snap/tumbler switches to NAICS 335931. ²

What this NAICS covers

• Manufacture of power circuit breakers for electric power systems. ²
• Manufacture of electric power distribution control panels and switchboards. ²
• Manufacture of electrical switchboard duct systems. ²
• Manufacture of electric fuses for power distribution. ²
• Manufacture of power switching equipment and assemblies. ²
• Manufacture of electric power switches other than pushbutton, snap, solenoid, or tumbler types. ²

Related NAICS and PSC codes

• NAICS descriptors per Census NAICS. ²
• PSC descriptors per GSA PSC Manual. ⁴

Key inclusions and exclusions (per NAICS)

• Included: power circuit breakers, power switching equipment, electric fuses, switchboard ducts, and power distribution control panels manufactured as switchgear/switchboard apparatus. ²
• Excluded: relays (classified to NAICS 335314). ²
• Excluded: switches for electronic applications (classified to NAICS 334419). ²
• Excluded: pushbutton, snap, tumbler, and similar wiring-circuit switches (classified to NAICS 335931). ²

SBA small business size standard

Under SBA’s Table of Small Business Size Standards (effective March 17, 2023), the employee-based size standard for NAICS 335313 is 1,250 employees. ³

Frequently asked questions

• What products fall under NAICS 335313? Products include power circuit breakers, power switching equipment, switchboard ducts, electric fuses, and electric power distribution control panels/switchboards. These are included under switchgear and switchboard apparatus manufacturing. ²

• How does NAICS 335313 differ from NAICS 335314 and NAICS 335931? 335313 covers switchgear/switchboard apparatus; 335314 covers relays and industrial controls; 335931 covers wiring-circuit switches such as pushbutton and snap types. Switches for electronic applications fall under NAICS 334419. ²

• What is the SBA small business size standard for NAICS 335313? The SBA size standard is 1,250 employees (employee-based). This threshold applies to eligibility for federal small business programs tied to this NAICS code. ³

• Which PSC codes commonly appear with switchgear and switchboard buys? PSC 6110 (Electrical Control Equipment) explicitly includes switchgear; PSC 5925 covers circuit breakers, which are typical components in switchgear assemblies. Always confirm the specific fit using the current PSC Manual. ⁴

• What is the current NAICS “vintage,” and when was NAICS created? The latest structure is NAICS 2022. NAICS was established in 1997 and is updated on a five-year cycle to maintain relevance with the evolving economy. ¹

Useful resources

• U.S. Census Bureau: NAICS official site and background. ¹
• U.S. Census Bureau: Official NAICS 335313 industry definition and cross-references. ²
• SBA Table of Small Business Size Standards (effective March 17, 2023). ³
• General Services Administration: Product and Service Code (PSC) Manual. ⁴

References

1. U.S. Census Bureau, North American Industry Classification System (NAICS) — About NAICS and updates. https://www.census.gov/naics/
2. U.S. Census Bureau, NAICS 335313 — Switchgear and Switchboard Apparatus Manufacturing (2022). https://www.census.gov/naics/?input=335313&year=2022&details=335313
3. U.S. Small Business Administration, Table of Small Business Size Standards (effective March 17, 2023). https://www.sba.gov/sites/default/files/2023-06/Table%20of%20Size%20Standards_Effective%20March%2017%2C%202023%20%282%29.pdf
4. General Services Administration, Product and Service Code (PSC) Manual, April 2025. https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf