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  2. Utilization categories - Wikipedia

    en.wikipedia.org/wiki/Utilization_categories

    60947-4-3 AC-55b Switching incandescent lamps 60947-4-3 AC-56a Switching transformers 60947-4-3 AC-56b Switching of capacitor batteries 60947-4-3 AC-58a Control of a hermetically sealed refrigeration compressor motor with automatic reset of overload releases: 8-hour operation with starting currents for starting, maneuvering, operation 60947-4-2

  3. List of telephone switches - Wikipedia

    en.wikipedia.org/wiki/List_of_telephone_switches

    EMS-1 (The ITEC Electronic Modular Switch is an electronic direct control switching system. The modules are combined to form a complete switch or any of the modules can be added to your present Step-by-Step Systems.) EMS-2 (The EMS-2 RURAL SWITCH is a stored program control analog switch designed to be cost-effective in small exchanges.

  4. Safety relay - Wikipedia

    en.wikipedia.org/wiki/Safety_relay

    They meet the requirements of EN 60947-5-1, EN 60204-1 and VDE 0113-1. [5] Furthermore, there are many variants of safety relays, which are suitable for various machinery applications. Time Delay Safety Relays [6] allow for a controlled sequence of operations before activating or deactivating outputs. This is useful when an immediate shutdown ...

  5. Contactor - Wikipedia

    en.wikipedia.org/wiki/Contactor

    AC contactor for pump application. A contactor is an electrically controlled switch used for switching an electrical power circuit. [1] A contactor is typically controlled by a circuit which has a much lower power level than the switched circuit, such as a 24-volt coil electromagnet controlling a 230-volt motor switch.

  6. ISO 13849 - Wikipedia

    en.wikipedia.org/wiki/ISO_13849

    These components are deemed "well-tried components" and are listed in ISO 13849-2, Annexes A through D. Additionally, components that have been tested by the manufacturer and approved according to the relevant component safety standard, e.g., IEC 60947-5-5, are also considered well-tried. Since Category 1 is single channel, DC avg = NONE. CCF ...

  7. I Tried 10 Brands of American Cheese Singles, and These Were ...

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    5. Borden American Cheese Singles. The truth is, so many of these cheeses taste identical. Borden and Harris Teeter are really similar, both lacking any distinct flavors that make them unique or ...

  8. Bills fire special teams coordinator Matthew Smiley after ...

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    The Buffalo Bills fired special teams coordinator Matthew Smiley, a person with direct knowledge of the decision told The Associated Press on Sunday, a move that came after coach Sean McDermott ...

  9. IEC 60204 - Wikipedia

    en.wikipedia.org/wiki/IEC_60204

    Switchgear [5] includes the power switching components, e.g., the main disconnecting device, and breakers protecting the supply conductors and the branch circuits in the machine. Controlgear [ 6 ] includes all of the control system components downstream of the switchgear, out to the final point of control, but not including the machine actuators.

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