Allen-Bradley is the brand-name of a line of factory automation equipment, today 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.

IndustryFactory Automation Equipment Manufacturer
PredecessorCompression Rheostat Company
Founded1903; 119 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

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 close to the next 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 $3.44 billion in 2020), which is the largest acquisition in Wisconsin history.[1] For all intents and purposes, Allen-Bradley took over 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. ^ Rockwell Automation. Our History.

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