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In an electric power system , switchgear is the combination of electrical disconnect switches,  fuses or  circuit breakers  used to control, protect and isolate electrical equipment. Switchgear is used both to de-energize equipment to allow work to be done and to clear  faults  downstream. This type of equipment is directly linked to the reliability of the  electricity  supply. Any switching and interrupting  devices  combined with associated control, regulating, metering, and protective devices, used primarily in connection with the generation, transmission, distribution , and conversion  of electric  power.



A network switch (also called switching hub, bridging hub, officially MAC bridge[1]) is a computer networking device  that connects devices together on a  computer network, by using  packet switching  to receive, process and forward data to the destination device. Unlike less advanced  network hubs, a network switch forwards data only to one or multiple devices that need to receive it, rather than broadcasting the same data out of each of its ports.