From Wikipedia, the free encyclopedia
IndustryFactory Automation Equipment Manufacturer
PredecessorCompression Rheostat Company
Founded1903; 120 years ago (1903) in Wisconsin, United States
FoundersDr. Stanton Allen and Lynde Bradley
Milwaukee, Wisconsin
United States
OwnerRockwell Automation
Logo used by Allen-Bradley prior to its acquisition by Rockwell Automation
Previous logo
Allen Bradley Programmable Controller with programmer
Allen-Bradley PLC installed in a control panel

Allen-Bradley is the brand-name of a line of factory automation equipment owned by Rockwell Automation. The company, with revenues of approximately US $6.4 billion in 2013, manufactures programmable logic controllers (PLC), human-machine interfaces, sensors, safety components and systems, software, drives and drive systems, contactors, motor control centers, and systems of such products. Rockwell Automation also provides asset-management services including repair and consulting. Rockwell Automation's headquarters is in Milwaukee, Wisconsin.

The Allen-Bradley Clock Tower is a Milwaukee landmark featuring the largest four-sided clock in the western hemisphere.


The company was founded in 1903 as the Compression Rheostat Company by Dr. Stanton Allen and Lynde Bradley with an initial investment of $1,000. In 1910 the firm was renamed Allen-Bradley Company; for nearly a century it provided the bulk of discrete resistors used for electronics and other products.[citation needed] In 1952 it opened a subsidiary in Galt, Ontario, Canada, that employs over 1000 people. In 1985 a company record was set as the fiscal year ended with $1 billion in sales. In February 1985, Rockwell International purchased Allen-Bradley for $1.651 billion (equivalent to $3.58 billion in 2021), which is the largest acquisition in Wisconsin history.[1][2] Allen-Bradley essentially took control of Rockwell's industrial automation division.

Rockwell eventually moved its headquarters to Milwaukee. In 2002, when Rockwell split into two companies, Allen-Bradley followed the automation division into Rockwell Automation.


  1. ^ "Our History". Rockwell Automation. Archived from the original on May 11, 2015. Retrieved January 16, 2023..
  2. ^ "Our History[2]". Rockwell Automation. Retrieved January 16, 2023.

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