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Power Equipment

The source for the data on power equipment product shipments is the U.S. Census Bureau.


Power Circuit Breakers

Surge Arrestors

  • Surge Arrestors 
  • Lightning arrestors for alternating current power transmission systems and substations; U.S. designation, station and intermediate, I.E.C. designation 10 kA and 5 kA Series A (335931A138)
  • Lightning arrestors for alternating current power distribution systems and substations; U.S. designation distribution and secondary I.E.C. designation 5 kA Series B, 2.5 kA and 1.5 kA (335931A141)
  • Lightning rods (335931A144)
  • View NEMA Product Scope



  • Transformers   
  • 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 (335311)
  • View NEMA Product Scope

NEMA is the largest trade association in the United States representing companies that manufacture products for the electroindustry. Its member companies fall into one or more of nine NEMA divisions, each made up of sections whose companies manufacture the same or related products. Together, they manufacture a broad range of products for the generation, transmission, distribution, control, and end-use of electricity.


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