NAICS 335311 — Power, Distribution, and Specialty Transformer Manufacturing 
BEA sector: Power, distribution, and specialty transformer manufacturing
Activity: Airport lighting transformers manufacturing
Activity: Arc-welding transformers, separate solid-state, manufacturing
Activity: Autotransformers for switchboards (except telephone switchboards) manufacturing
Activity: Autotransformers manufacturing
Activity: Ballasts (i.e., transformers) manufacturing
Activity: Boosters, feeder voltage (i.e., electrical transformers), manufacturing
Activity: Burner ignition transformers manufacturing
Activity: Control transformers manufacturing
Activity: Current limiting reactors, electrical, manufacturing
Activity: Distribution transformers, electric, manufacturing
Activity: Electric furnace transformers manufacturing
Activity: Feeder voltage regulators and boosters (i.e., electrical transformers) manufacturing
Activity: Fluorescent ballasts (i.e., transformers) manufacturing
Activity: Fluorescent lighting transformers manufacturing
Activity: Generator voltage regulators, electric induction and step-type (except engine electrical equipment), manufacturing
Activity: Instrument transformers (except complete instruments) for metering or protective relaying use manufacturing
Activity: Isolation transformers manufacturing
Activity: Lamp ballasts manufacturing
Activity: Lighting transformers manufacturing
Activity: Lighting transformers, street and airport, manufacturing
Activity: Line voltage regulators (i.e., electric transformers) manufacturing
Activity: Luminous tube transformers manufacturing
Activity: Machine tool transformers manufacturing
Activity: Power transformers, electric, manufacturing
Activity: Regulating transformers, power system-type, manufacturing
Activity: Regulators (i.e., electric transformers), feeder voltage, manufacturing
Activity: Saturable transformers manufacturing
Activity: Signaling transformers, electric, manufacturing
Activity: Specialty transformers, electric, manufacturing
Activity: Substation transformers, electric power distribution, manufacturing
Activity: Transformers, electric power, manufacturing
Activity: Transformers, ignition, for use on domestic fuel burners, manufacturing
Activity: Transformers, reactor, manufacturing
Activity: Transformers, separate solid-state arc-welding, manufacturing
Activity: Transmission and distribution voltage regulators manufacturing
Activity: Voltage regulating transformers, electric power, manufacturing
Activity: Voltage regulators, transmission and distribution, manufacturing