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  2. Square D - Wikipedia

    en.wikipedia.org/wiki/Square_D

    Square D is an American manufacturer of electrical equipment headquartered in Andover, Massachusetts. Square D is a flagship brand of Schneider Electric , which acquired the company in 1991. The company was listed on the New York Stock Exchange for 55 years prior to its acquisition without reporting financial loss in any calendar quarter ...

  3. Electric switchboard - Wikipedia

    en.wikipedia.org/wiki/Electric_switchboard

    A low-voltage switchboard A modern electric switchboard. An electric switchboard is a piece of equipment that distributes electric power from one or more sources of supply to several smaller load circuits. It is an assembly of one or more panels, each of which contains switching devices for the protection and control of circuits fed from the ...

  4. Schneider Electric - Wikipedia

    en.wikipedia.org/wiki/Schneider_Electric

    Schneider Electric SE is a French multinational corporation that specializes in digital automation and energy management. [3] [4]Schneider Electric is a Fortune Global 500 company, publicly traded on the Euronext Exchange, and is a component of the Euro Stoxx 50 stock market index. [5]

  5. List of telephone switches - Wikipedia

    en.wikipedia.org/wiki/List_of_telephone_switches

    NX1 (Family NX1A, B, C & D; All based on Ericsson By-Path Crossbar license) L.M. Ericsson purchased North Electric in the early 1950s and brought this Swedish design to North where it was reworked to conform to U.S. telecommunications requirements.

  6. Telephone switchboard - Wikipedia

    en.wikipedia.org/wiki/Telephone_switchboard

    PBX switchboard, 1975. A telephone switchboard is a device used to connect circuits of telephones to establish telephone calls between users or other switchboards. The switchboard is an essential component of a manual telephone exchange, and is operated by switchboard operators who use electrical cords or switches to establish the connections.

  7. Telephone exchange - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange

    A telephone operator manually connecting calls with cord pairs at a telephone switchboard A modern central office, equipped with voice communication and broadband data capabilities A telephone exchange , telephone switch , or central office is a central component of a telecommunications system in the public switched telephone network (PSTN) or ...

  8. Kellogg Switchboard and Supply Company - Wikipedia

    en.wikipedia.org/wiki/Kellogg_Switchboard_and...

    Kellogg company logo as used from the 1920s to the 1950s. The Kellogg Switchboard and Supply Company was an American manufacturer of telecommunication equipment. Anticipating the expiration of the earliest, fundamental Bell System patents, Milo G. Kellogg, an electrical engineer, founded the company in 1897 in Chicago to produce telephone exchange equipment and telephone apparatus.

  9. List of IEC standards - Wikipedia

    en.wikipedia.org/wiki/List_of_IEC_standards

    IEC 60803 Recommended dimensions for hexagonal and square crimping-die cavities, indentors, ganges, outer conductor crimp sleeves and centre contact crimp barrels for R.F. cables and connectors; IEC 60805 Guide for commissioning, operation and maintenance of storage pumps and of pump-turbines operating as pumps