2022 NAICS national industry in sector 31-33 Manufacturing
335314 Relay and Industrial Control Manufacturing
NAICS 335314 is the US industry code for relay and industrial control manufacturing. This U.S.
- Code
- 335314 (2022 NAICS)
- Title
- Relay and Industrial Control Manufacturing
- Part of
- Electrical Equipment Manufacturing
- SBA small business limit
- Up to 750 employees
- Closest UK SIC
- 27900 (details)
Changes coming. The NAICS 2027 revision applies to data from 1 January 2027, and SBA proposed new size standards on 20 August 2026. The values on this page are the ones in force today; we update this page when the official files change.
Official definition
This U.S. industry comprises establishments primarily engaged in manufacturing relays, motor starters and controllers, and other industrial controls and control accessories.
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Manufacturing environmental and appliance control equipment are classified in U.S. Industry 334512, Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use.
- Manufacturing instruments for controlling industrial process variables are classified in U.S. Industry 334513, Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables.
Activities listed under 335314
The Census index assigns these 22 activities to this code. If your business matches one, this is your code.
- Armature relays manufacturing
- Brakes and clutches, electromagnetic, manufacturing
- Brakes, electromagnetic, manufacturing
- Control circuit devices, magnet and solid-state, manufacturing
- Control circuit relays, industrial, manufacturing
- Control equipment, electric, manufacturing
- Controls and control accessories, industrial, manufacturing
- Controls for adjustable speed drives manufacturing
- Crane and hoist controls, including metal mill, manufacturing
- Flow actuated electrical switches manufacturing
- Industrial controls (e.g., pushbutton, selector, and pilot switches) manufacturing
- Marine and navy auxiliary controls, manufacturing
- Motor control accessories (including overload relays) manufacturing
- Motor control centers, manufacturing
- Motor controls, electric, manufacturing
- Motor starters, contactors, and controllers, industrial, manufacturing
- Numerical controls, manufacturing
- Relays, electrical and electronic, manufacturing
- Rheostats, industrial control, manufacturing
- Solenoid switches, industrial, manufacturing
- Timing devices, mechanical and solid-state (except clockwork), manufacturing
- Vacuum relays manufacturing
SBA size standard for 335314
To count as a small business for SBA loans and federal contracts under NAICS 335314, your business (including affiliates) must not exceed 750 employees. Check your business.
Source: SBA table of size standards, effective March 17, 2023.
Closest UK SIC 2007 codes
There is no official one-to-one link between NAICS and UK SIC. These codes share the same international class (ISIC Rev. 4: 2710, 2790), so treat them as a starting point and check the definition.
Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.
Similar codes to compare
Data last changed November 14, 2026. How this page is built.