Electrical Schematic Timer Symbols

By | February 5, 2023

Electrical schematic timer symbols are used to represent timers in electrical circuit diagrams. They are typically represented by a square or rectangle with rounded corners, and contain the following elements:

  • A circle or arc to represent the timer's operating cycle
  • A line or arrow to represent the timer's direction of operation
  • A number to represent the timer's duration
The following table provides a list of common electrical schematic timer symbols, along with their meanings:
Symbol Meaning
Timer symbol On-delay timer
Off-delay timer symbol Off-delay timer
Time-delay relay symbol Time-delay relay
Time-delay relay contact symbol Time-delay relay contact
It is important to note that these are just some of the most common electrical schematic timer symbols. There are many other symbols that may be used, depending on the specific type of timer and the application in which it is being used. If you are unsure of the meaning of a particular timer symbol, it is always best to consult with a qualified electrician.

In addition to the symbols listed above, there are also a number of other symbols that may be used in electrical schematics to represent timers. These include:

  • A square or rectangle with a diagonal line through it to represent a timer that is turned off
  • A square or rectangle with a circle inside it to represent a timer that is turned on
  • A square or rectangle with a plus sign inside it to represent a timer that is in the process of timing
It is important to note that these symbols are not as common as the ones listed above, and they may not be used in all electrical schematics. If you are unsure of the meaning of a particular symbol, it is always best to consult with a qualified electrician.

Electrical schematic timer symbols are an important part of electrical circuit diagrams. They allow electricians and other electrical professionals to quickly and easily identify the different types of timers used in a circuit, and to understand how they work. By understanding the different types of timer symbols, you can better understand electrical schematics and how to troubleshoot electrical problems.


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