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switchgear

or switch gear

[swich-geer]
noun Electricity.
  1. switching equipment used in an electric power station.
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Origin of switchgear

First recorded in 1900–05; switch + gear
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for switchgear

switchgear

noun
  1. electrical engineering any of several devices used for opening and closing electric circuits, esp those that pass high currents
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012