 | 1948: formation of ELPO GmbH in Altdorf, near Nuremberg, by Jakob Ellenberger and Harald A. Poensgen.
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 | 1953: launch of the E-T-A Circuit Breakers for Equipment (CBEs) protection programme.
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 | Overseas expansion: establishment of subsidiary companies in Chicago/USA and Montreal/Canada in 1955 and 1957.
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 | 1969: formation of the electronic division leads to innovations in protection and control technology
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 | 1976: formation of E-T-A Circuit Breakers Ltd. in the UK
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 | 1977: commencement of production of E-T-A CBEs in Tunisia
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 | 1978: ELPO is renamed E-T-A.
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 | 1980s: formation of subsidiaries in Austria, France, Spain, Belgium and Italy.
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 | 1991: expansion of manufacturing capability with inauguration of new plant in Altdorf.
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 | 1993: ISO 9001 Certification.
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 | 1994: formation of subsidiary in Japan.
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 | 1997: manufacturing plant opened in Rembang/Indonesia to serve the rapidly growing South East Asia market
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 | 1998: E-T-A celebrates its 50th anniversary - and its continuing growth...
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 | 2002: E-T-A certified to the new DIN EN ISO 9001:2000 and E DIN EN 9100. |