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Electrical Schematic – NEMA/IEC Electrical Symbols Comparison

Here below the cross reference of common schematic/wiring diagram symbols used throughout various parts of the world.
The following tables describe the device and show the symbol by area of usage.

Here below the component’s list:

  • Capacitor
  • Circuit breaker
  • Coil
  • Basic contacts
  • Time delay contacts
  • Disconnect switch
  • Fuse
  • Earth (ground)
  • Induction motor
  • Indicating lights
  • Meters
  • Overload relays
  • Pushbuttons
  • Resistor
  • Switches
  • Selector switch
  • Temperature Switches
  • Pressure Switches
  • Transformer

 

Common Schematic Diagrams:

  • Across the Line Non-Reversing Starters with Start–Stop Pushbuttons
  • Across the Line Non-Reversing Starters with Hand–Off–Auto Selector Switch
  • Across the Line Reversing Starters with Forward–Reverse–Stop Pushbuttons
  • Combination Starter with Fused Disconnect Switch and Start–Stop Pushbuttons
  • Combination Starter with Fused Disconnect Switch and Start–Stop Pushbuttons
  • Manual Starter

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