Manufacturer Background

Siemens Industry, Inc. is the U.S. operating arm of Siemens AG and is a successor to portions of the Allis-Chalmers U.S. transformer and switchgear business following Allis-Chalmers’ insolvency in the 1980s. Siemens Industry is named as a defendant in publicly filed U.S. asbestos litigation including the Duke v. CBS Corporation et al. case (Cause No. 1822-CC00339, City of St. Louis MO) regarding asbestos-bearing transformer and electrical-distribution components allegedly handled by U.S. workers servicing Siemens-built and Allis-Chalmers-built transformer products. Per publicly filed allegations, Siemens / Allis-Chalmers transformer designs from the 1950s-1980s asbestos era allegedly incorporated asbestos-bearing phenolic spacers, Bakelite-type laminate, asbestos transformer paper, asbestos cloth, asbestos gaskets, and phenolic-asbestos bushings consistent with industry practice during the era.

Documented Asbestos-Bearing Products

  • Siemens power transformers, distribution transformers, and substation transformers (post-1980s Allis-Chalmers acquisition)
  • Allis-Chalmers transformer products serviced under Siemens successor ownership
  • Asbestos-bearing components in aged Siemens / Allis-Chalmers transformers serviced at U.S. transformer service centers
  • Bakelite-type phenolic laminate, asbestos paper, asbestos cloth, asbestos gaskets, phenolic-asbestos bushings

Documented U.S. Plants

  • Siemens Industry U.S. transformer operations (successor to portions of Allis-Chalmers Milwaukee West Allis works)
  • Aged Allis-Chalmers transformers serviced under Siemens ownership at U.S. transformer service centers

How Workers Were Exposed

Per publicly filed allegations in U.S. asbestos litigation, workers were allegedly exposed to Siemens Industry asbestos-bearing transformer components during:

  • Transformer assembly at Siemens Industry plants — handling phenolic spacers, asbestos paper, Bakelite-type laminate, gaskets, and asbestos cloth during new-transformer construction
  • Transformer dismantling and rebuild at service centers — extracting aged asbestos components from field-aged Siemens Industry transformers (highest documented exposure category)
  • Coil-winding operations — fitting asbestos transformer paper and phenolic spacers during winding assembly
  • Machining and trimming — drilling, sawing, and finishing operations on cured phenolic and asbestos-bearing laminate
  • Field maintenance and substation service — utility substation electricians, lineworkers, and industrial electricians handling Siemens Industry transformers during in-service repair
  • Reconditioning operations — heat-baking, vacuum drying, and oil refilling of disassembled transformer units saturated with asbestos fiber

Workforce Trade Hub

Component Supplier Crosswalk

Workers exposed to Siemens Industry power transformers at any U.S. transformer manufacturing plant, transformer service center, utility substation, or industrial facility may have legal rights if they have since been diagnosed with mesothelioma, asbestosis, lung cancer, or another asbestos-related disease.

Free, confidential case evaluation: Speak with O’Brien Law Firm — (314) 936-2956

All consultations are free. No fee unless a financial recovery is made on your behalf.

This information reflects exposure pathways and product documentation drawn from publicly filed asbestos litigation, federal regulatory records, and industry archives. It does not constitute a finding of fact or liability with respect to any specific manufacturer, supplier, or facility operator.