2022 NAICS industry in sector 31-33 Manufacturing
33531 Electrical Equipment Manufacturing
NAICS 33531 is the US industry code for electrical equipment manufacturing. It covers establishments primarily engaged in manufacturing power, distribution, and specialty transformers; electric motors, generators, and motor generator sets; switchgear and switchboard apparatus; relays; and industrial controls.
Official definition
This industry comprises establishments primarily engaged in manufacturing power, distribution, and specialty transformers; electric motors, generators, and motor generator sets; switchgear and switchboard apparatus; relays; and industrial controls.
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Manufacturing turbine generator set units and electric outboard motors are classified in Industry 33361, Engine, Turbine, and Power Transmission Equipment Manufacturing.
- Manufacturing electronic component-type transformers and switches are classified in Industry 33441, Semiconductor and Other Electronic Component Manufacturing.
- Manufacturing environmental controls and industrial process control instruments are classified in Industry 33451, Navigational, Measuring, Electromedical, and Control Instruments Manufacturing.
- Manufacturing switches for electrical circuits, such as pushbutton and snap switches are classified in Industry 33593, Wiring Device Manufacturing.
- Manufacturing welding and soldering equipment (except handheld soldering irons) are classified in Industry 33399, All Other General Purpose Machinery Manufacturing.
- Manufacturing starting motors and generators for internal combustion engines are classified in Industry 33632, Motor Vehicle Electrical and Electronic Equipment Manufacturing.
Codes in 33531
Data last changed November 14, 2026. How this page is built.