Air circuit breaker symbol

The air circuit breaker (ACB) symbol is a standardized electrical symbol used to represent an air circuit breaker in electrical diagrams and schematics. The symbol is as follows:

  _______
 /        \
|  A  |
 _______/
  |       |
  |  B  |
  |_______|

In this symbol:

• The horizontal line represents the main busbar.
• The vertical lines represent the circuit breaker's poles (A and B).
• The "A" and "B" labels indicate the phases (A, B, or C) of the electrical circuit.
• The arrowheads on the poles indicate the direction of current flow.

This symbol is used to represent an air circuit breaker in electrical diagrams, such as:

• Single-line diagrams
• One-line diagrams
• Schematics
• Wiring diagrams

The air circuit breaker symbol is used to indicate the presence of an air circuit breaker in the electrical circuit, and it helps to identify the location and function of the breaker in the overall electrical system.