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  2. 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.

  3. Circuit diagram - Wikipedia

    en.wikipedia.org/wiki/Circuit_diagram

    A circuit diagram (or: wiring diagram, electrical diagram, elementary diagram, electronic schematic) is a graphical representation of an electrical circuit. A pictorial circuit diagram uses simple images of components, while a schematic diagram shows the components and interconnections of the circuit using standardized symbolic representations.

  4. Reference designator - Wikipedia

    en.wikipedia.org/wiki/Reference_designator

    A reference designator unambiguously identifies the location of a component within an electrical schematic or on a printed circuit board.The reference designator usually consists of one or two letters followed by a number, e.g. C3, D1, R4, U15.

  5. DIN 72552 - Wikipedia

    en.wikipedia.org/wiki/DIN_72552

    wiper motor + in 1, 3, 54d, S 53a limit stop + 54, +2 53b limit stop field 3, 54e 53c washer pump 53e stop field 1, 2 53i wiper motor with permanent magnet, third brush for high speed Acoustic warning 71 beeper in H 71a beeper out, low 71b beeper out, high 72 hazard lights switch 85c hazard sound on Switches 81 opener 81a 1 out 81b 2 out 82 lock in

  6. Commutator (electric) - Wikipedia

    en.wikipedia.org/wiki/Commutator_(electric)

    A commutator is a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit. It consists of a cylinder composed of multiple metal contact segments on the rotating armature of the machine.

  7. ANSI device numbers - Wikipedia

    en.wikipedia.org/wiki/ANSI_device_numbers

    88 - Auxiliary Motor or Motor Generator; 89 - Line Switch; 90 - Regulating Device; 91 - Voltage Directional Relay; 92 - Voltage And Power Directional Relay; 93 - Field-Changing Contactor; 94 - Tripping or Trip-Free Relay; 95 – Trip Circuit Healthy; 96 – Transmitter; 97 – For specific applications where other numbers are not suitable

  8. Electrical contact - Wikipedia

    en.wikipedia.org/wiki/Electrical_contact

    Schematic for an electromechanical relay showing a coil, four pair of normally open and one pair of normally closed contacts The National Association of Relay Manufacturers and its successor, the Relay and Switch Industry Association define 23 distinct forms of electrical contact found in relays and switches.

  9. Transfer switch - Wikipedia

    en.wikipedia.org/wiki/Transfer_switch

    Simplified single line diagram of a single-phase transfer switch to select either 'city' (utility) power or local generator power 3-phase Intelligent 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 ...