All Types of Circuit Breaker Symbols and Diagrams


Circuit Breaker electrical protective device that breaks the circuit when an electrical fault such as short circuit fault, overload fault occurs. The circuit breaker provides the function to turn on or turn off manually in normal conditions and turn off automatically in the fault condition. There are a lot of applications of circuit breakers in switchgear systems, electrical lines, electrical devices, etc. There are so many types of circuit breakers available and they are categorized by arcing medium, current rating, voltage ratings, response time, working principle, etc. Anyway, you must know all the basic symbols of circuit breakers.

All Types of Circuit Breaker Symbols and Diagrams



The different types of circuit breaker are,
  • Normal Circuit Breaker
  • Non-Draw Out Circuit Breaker
  • Draw Out Circuit Breaker
  • Threaded Circuit Breaker
  • Single Pole Circuit Breaker
  • Double Pole Circuit Breaker
  • Three Pole Circuit Breaker
  • Isolator Circuit Breaker
  • Cartridge Circuit Breaker
  • Air Circuit Breaker or ACB
  • Oil Circuit Breaker or OCB
  • Vacuum Circuit Breaker or VCB




Basic Symbol of Circuit Breaker


Circuit Breaker Symbol, Symbol of Circuit Breaker


Before, going to know different types, you must know the basic symbol of circuit breaker. Because this is only mostly used everywhere.


Non Draw Out Circuit breaker symbol


Non Drawout Circuit Breaker Symbol, Symbol of Non Drawout Circuit Breaker


Here you can see the symbol of non-drawout circuit breaker. Non-draw-out circuit breakers are those, during maintenance the current flow through them should be stopped.


Draw Out Circuit Breaker Symbol


Drawout Circuit Breaker Symbol, Symbol of Drawout Circuit Breaker


Here, you can see the symbol of draw-out circuit breaker. Draw out circuit breakers are those, during the maintenance current flow through them is not required to stop. The current flow can be bypassed.




Threaded Circuit Breaker Symbol


Here, you can see the symbol of threaded circuit breaker.

Threaded Circuit Breaker Symbol, Symbol of Threaded Circuit Breaker


Single Pole Circuit Breaker Symbol


Here, you can see the symbol of Single Pole Circuit Breaker. It is only connected to a single-phase conductor.

Single Pole Circuit Breaker Symbol, Symbol of Single Pole Circuit Breaker


Double Pole Circuit Breaker Symbol


Here, you can see the symbol of double pole circuit breaker. A double pole circuit breaker is connected to one phase and one neutral or two phases.

Double Pole Circuit Breaker Symbol, Symbol of Double Pole Circuit Breaker




Three Pole Circuit Breaker Symbol


Here, you can see the symbol of three-pole circuit breaker. Three pole circuit breaker is connected with three phases or live supply.

Three Pole Circuit Breaker Symbol, Symbol of Three Pole Circuit Breaker


Isolator Circuit Breaker Symbol


Here, you can see the symbol of isolator circuit breaker. It is also known as a circuit breaker with an isolator.

Isolator Circuit Breaker Symbol, Symbol of Isolator Circuit Breaker



Cartridge Circuit Breaker Symbol


Cartidge Circuit Breaker Symbol, Symbol of Cartidge Circuit Breaker



Oil Circuit Breaker(OCB) Symbol


Oil Circuit Breaker Symbol, OCB Symbol




Air Circuit Breaker(ACB) Symbol


Air Circuit Breaker Symbol, ACB Symbol



MCB or Moulded Case Circuit Breaker Symbol


Moulded Case Circuit Breaker Symbol, MCB Symbol


Vacuum Circuit Breaker(VCB) Symbol


Vacuum Circuit Breaker Symbol, VCB Symbol


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All Types of Circuit Breaker Symbols and Diagrams All Types of Circuit Breaker Symbols and Diagrams Reviewed by Author on 8/07/2021 Rating: 5
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