NAICS 335311 - Power, Distribution, and Specialty Transformer Manufacturing
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What is NAICS 335311
NAICS code 335311 covers the manufacturing of power, distribution, and specialty transformers. Businesses in this sector produce a range of transformers including industrial and consumer types that vary voltage levels but do not perform AC to DC conversion. This includes step-up and step-down transformers essential for electrical power distribution and transmission systems. Companies involved in this industry typically design and fabricate transformers for use in electric utilities, industrial plants, and commercial facilities. Government agencies contract for these products to ensure reliable power infrastructure, support military installations, and maintain critical public utilities. The precision and durability required in transformer manufacturing make these contracts vital for the stability and modernization of electrical networks.
Industry Classification for NAICS 335311
This U.S. industry comprises establishments primarily engaged in manufacturing power, distribution, and specialty transformers (except electronic components). Industrial-type and consumer-type transformers in this industry vary (e.g., step up or step down) voltage but do not convert alternating to direct or direct to alternating current.
Illustrative Examples:
- Fluorescent ballasts (i.e., transformers) manufacturing
- Substation transformers, electric power distribution, manufacturing
- Distribution transformers, electric, manufacturing
- Transmission and distribution voltage regulators manufacturing
Breakdown for NAICS 335311
- Manufactures power, distribution, and specialty transformers excluding electronic components.
- Includes industrial and consumer-type transformers that adjust voltage levels.
- Transformers do not convert AC to DC or vice versa but manage voltage step-up or step-down.
- Covers fluorescent ballasts, substation transformers, distribution transformers, and voltage regulators.
- Typical contracts support public utilities, military installations, and infrastructure projects.
Included Activities for NAICS 335311
- Design and fabrication of power transformers for electric utilities.
- Manufacturing of distribution transformers for commercial and industrial use.
- Production of specialty transformers including fluorescent ballasts.
- Assembly of substation transformers for transmission and distribution networks.
- Manufacturing of transmission and distribution voltage regulators.
- Testing and quality assurance of transformer products.
- Packaging and delivery of transformers to government and utility customers.
- Providing maintenance and repair services for transformers.
Business Types for NAICS 335311
- Power transformer manufacturers
- Electrical equipment fabricators
- Industrial transformer suppliers
- Specialty electrical component manufacturers
- Substation equipment producers
Subcategories for NAICS 335311
- Airport lighting transformers manufacturing
- Arc-welding transformers, separate solid-state, manufacturing
- Autotransformers for switchboards (except telephone switchboards) manufacturing
- Autotransformers manufacturing
- Ballasts (i.e., transformers) manufacturing
- Boosters, feeder voltage (i.e., electrical transformers), manufacturing
- Burner ignition transformers manufacturing
- Control transformers manufacturing
- Current limiting reactors, electrical, manufacturing
- Distribution transformers, electric, manufacturing
- Electric furnace transformers manufacturing
- Feeder voltage regulators and boosters (i.e., electrical transformers) manufacturing
- Fluorescent ballasts (i.e., transformers) manufacturing
- Fluorescent lighting transformers manufacturing
- Generator voltage regulators, electric induction and step-type (except engine electrical equipment), manufacturing
- Instrument transformers (except complete instruments) for metering or protective relaying use manufacturing
- Isolation transformers manufacturing
- Lamp ballasts manufacturing
- Lighting transformers manufacturing
- Lighting transformers, street and airport, manufacturing
- Line voltage regulators (i.e., electric transformers) manufacturing
- Luminous tube transformers manufacturing
- Machine tool transformers manufacturing
- Power transformers, electric, manufacturing
- Regulating transformers, power system-type, manufacturing
- Regulators (i.e., electric transformers), feeder voltage, manufacturing
- Saturable transformers manufacturing
- Signaling transformers, electric, manufacturing
- Specialty transformers, electric, manufacturing
- Substation transformers, electric power distribution, manufacturing
- Transformers, electric power, manufacturing
- Transformers, ignition, for use on domestic fuel burners, manufacturing
- Transformers, reactor, manufacturing
- Transformers, separate solid-state arc-welding, manufacturing
- Transmission and distribution voltage regulators manufacturing
- Voltage regulating transformers, electric power, manufacturing
- Voltage regulators, transmission and distribution, manufacturing
Government Buyers for NAICS 335311
Federal agencies such as the Department of Energy, Department of Defense, and local utility commissions frequently purchase transformers under this NAICS code. These agencies require transformers to support large-scale power grids, military bases, and infrastructure projects. Additionally, public power authorities and municipal governments procure these products to enhance grid reliability and manage power distribution. The need for specialized transformers to meet regulatory standards and ensure uninterrupted power supply drives government demand for these manufacturing services.
Contract Types & Procurement for NAICS 335311
Contracts under NAICS 335311 often include firm-fixed-price, indefinite-delivery indefinite-quantity (IDIQ), and requirements contracts. Procurement methods commonly involve competitive bidding and negotiated contracts to balance cost and technical specifications. Contract values vary widely depending on the scale of transformers and complexity of the project, ranging from small-scale orders for specialty transformers to multi-million dollar contracts for large substation transformers. Long-term maintenance and repair contracts are also prevalent, reflecting the ongoing needs of government power infrastructure.
Details for NAICS 335311
Explore the hierarchy and related codes for this industry
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