Klöckner-Moeller
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History and Evolution
- 1899: Franz Klöckner founded a company in Cologne, Germany, for electrical switching devices.
- 1911: Hein Moeller joined the company, developing innovations like the first three-phase oil-insulated contactor in 1912.
- 1940s: The company was renamed Klöckner-Moeller.
- 1990s: The Moeller Test Laboratory in Bonn became the first German laboratory accredited for industrial low-voltage devices.
- 1999: The company became Moeller GmbH to mark its centennial.
- 2008: Eaton Corporation acquired the Moeller Group.
Product Focus
Klöckner-Moeller specialized in electrical components for industrial automation and control systems, with products including:
- Circuit breakers
- Contactors
- Programmable logic controllers (PLCs)
- Motor control systems
- Relays
- Switchgear and control systems
Current Status
Today, the Klöckner-Moeller brand is part of Eaton, a global power management company, which continues to offer these high-quality components and systems for industrial and residential applications.



