Sketch of a circuit breaker

Here is a simple sketch of a circuit breaker:

          +---------------+
          |  Main Contact  |
          |  (Normally Open) |
          +---------------+
                  |
                  |
                  v
          +---------------+
          |  Trip Mechanism  |
          |  (e.g. Thermal  |
          |   or Magnetic)  |
          +---------------+
                  |
                  |
                  v
          +---------------+
          |  Arc Chute      |
          |  (to extinguish  |
          |   arc during trip) |
          +---------------+
                  |
                  |
                  v
          +---------------+
          |  Main Contact  |
          |  (Normally Closed) |
          +---------------+
                  |
                  |
                  v
          +---------------+
          |  Load          |
          |  (e.g. Wire,  |
          |   Motor, etc.)  |
          +---------------+

Here's a brief explanation of each component:

• Main Contact: The main contact is the switching mechanism that connects and disconnects the load from the power source. It is normally open (not connected) until the circuit breaker is tripped.
• Trip Mechanism: The trip mechanism is responsible for detecting overcurrent or overvoltage conditions and triggering the circuit breaker to trip. This can be achieved through thermal or magnetic means.
• Arc Chute: The arc chute is a component that helps to extinguish the arc that forms when the circuit breaker trips. This is important to prevent damage to the breaker and ensure safe operation.
• Main Contact (Normally Closed): When the circuit breaker is tripped, the main contact closes, disconnecting the load from the power source.
• Load: The load is the device or circuit that is connected to the circuit breaker. This can be a wire, motor, lighting circuit, or any other type of electrical load.

Note that this is a highly simplified sketch, and actual circuit breakers may have additional components or more complex mechanisms.