Westinghouse purchased Challenger in 1987. Eaton purchased the industrial control & circuit breaker/load center line from Westinghouse in 1992. Nothing has changed since as I have a catalog called "CHALLENGER SELECTOR" with the EATON logo on back. It would appear that the Westinghouse "BR" series 1 inch breakers, originally sold as "BRYANT" by Westinghouse and the Challenger breakers are nearly identical. Eaton owns Cutler-Hammer, so that they now have the CH slim breakers similar to Square D "QO" and the "BR" breakers similar to Square D "HOMELINE". It seems that everybody seems to be making a 1 inch breaker these days. The Challenger, Cutler Hammer, and former Westinghouse type breakers are available through all Cutler Hammer distributors.
