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  2. Transfer switch - Wikipedia

    en.wikipedia.org/wiki/Transfer_switch

    A transfer switch is an electrical switch that switches a load between two sources. Some transfer switches are manual, in that an operator effects the transfer by throwing a switch, while others are automatic and trigger when they sense one of the sources has lost or gained power. An Automatic Transfer Switch (ATS) is often installed where a ...

  3. Circuit breaker (overcurrent) - Wikipedia

    en.wikipedia.org/wiki/Circuit_breaker_(overcurrent)

    Large low-voltage molded-case and power circuit breakers may have electric motor operators so they can open and close under remote control. These may form part of an automatic transfer switch system for standby power. Low-voltage circuit breakers are also made for direct-current (DC) applications, such as for subway lines.

  4. Electrical contact - Wikipedia

    en.wikipedia.org/wiki/Electrical_contact

    When the contacts touch, the switch is closed; when the contacts are separated, the switch is open. The gap must be an insulating medium, such as air, vacuum, oil, SF 6 . Contacts may be operated by humans in push-buttons and switches , by mechanical pressure in sensors or machine cams, and electromechanically in relays.

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  6. ASCO Power Technologies - Wikipedia

    en.wikipedia.org/wiki/ASCO_Power_Technologies

    The "Firetrol" branch of ASCO provides power transfer switches, controls, and alarms for fire suppression. ASCO's headquarters is located in Florham Park, New Jersey. With over 1400 employees and 500,000 square feet of manufacturing floor space, it is the world's largest manufacturer of power transfer switches.

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