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About Square D

Products from our market leading Square D brands have become Schneider Electric. This will make it more obvious that our extensive offering of innovative technologies is highly compatible and complement each other for integrated, tailored solutions.

While the Square D brand name will change, the unique plug on line mounting system incorporated in many of these products will remain a key feature, meaning the equipment with continue to be compatible with all existing installations.

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The history of Square D

Square D by Schneider Electric is a leading supplier of electrical distribution, protection and intelligent control solutions. With over 45 years experience in the UK you can have confidence in the reliability and excellence in the Square D range of products.

Square D by Schneider Electric consumer units provide arguably the highest levels of residential circuit protection safety. With a wide range of switch disconnectors, RCDs, MCBs and an SP RCBO option, the Qwikline II provides maximum continuity of supply in the event of a fault, combined with installer and user safety, and device protection

In 2003, the Square D by Schneider Electric brand celebrated its 100th anniversary. One hundred years of know-how and innovation in electricity and automation management.

1902: Founding of Detroit Fuse and Manufacturing which produced fuses in cases and fuse switches in boxes. The reputations of the «D» signing the company’s conduit boxes lead it to choose the name Square D. Its fame spread: in the 1940s, Square D counted 10 factories in the United States and a workforce of 7,000, manufacturing half of all the circuit breakers used in aviation.

In the 1950s, the company opened its first European subsidiary. Subsidiaries were also opened in Asia and South Africa. The brand launched programmable robots, a new generation of boxes for residential use, a fire detector for protection against current overcharge and the detection/interruption of electric arcs.

In 1991, Schneider Electric acquired Square D. Products and systems developed by the Square D by Schneider Electric brand are present in all sectors of activity, from circuit breakers to monitoring and control systems including PLCs known as Sy/Max. The tertiary and residential building sectors are major consumers of Square D by Schneider Electric products.

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