Circuit breaker circuit diagram

Here is a basic circuit diagram for a circuit breaker:

          +---------------+
          |  Load  |       |
          |  (e.g.  |       |
          |   light  |       |
          |   bulb)  |       |
          +---------------+
                  |
                  |  +---------------+
                  |  |  Circuit Breaker  |
                  |  |  (e.g. 30A, 2P)  |
                  |  +---------------+
                  |
                  |  +---------------+
                  |  |  Power Source  |
                  |  |  (e.g. 120V AC)  |
                  |  +---------------+

In this diagram:

• The "Load" represents the device or circuit that is being protected by the circuit breaker (e.g. a light bulb).
• The "Circuit Breaker" is the device that monitors the current flowing through the circuit and trips (opens) the circuit if the current exceeds a certain threshold (e.g. 30A).
• The "Power Source" is the source of electrical power for the circuit (e.g. a 120V AC outlet).

Here's a more detailed diagram of a typical circuit breaker:

          +---------------+
          |  Load  |       |
          |  (e.g.  |       |
          |   light  |       |
          |   bulb)  |       |
          +---------------+
                  |
                  |  +---------------+
                  |  |  Trip Unit  |
                  |  |  (e.g. thermal  |
                  |  |   or magnetic) |
                  |  +---------------+
                  |
                  |  +---------------+
                  |  |  Main Contacts  |
                  |  |  (e.g. 2P)     |
                  |  +---------------+
                  |
                  |  +---------------+
                  |  |  Power Source  |
                  |  |  (e.g. 120V AC)  |
                  |  +---------------+

In this diagram:

• The "Trip Unit" is the component that detects when the current flowing through the circuit exceeds the threshold and sends a signal to the main contacts to open.
• The "Main Contacts" are the physical contacts that connect and disconnect the power source from the load. When the trip unit detects a fault, it sends a signal to the main contacts to open, disconnecting the power source from the load.

Note that this is a highly simplified diagram, and actual circuit breakers may have additional components and features, such as:

• Overcurrent protection (e.g. thermal or magnetic)
• Short-circuit protection
• Ground fault protection
• Arc fault protection
• LED indicators for fault detection
• Test buttons for manual tripping

It's also worth noting that circuit breakers can be classified into different types, such as:

• Thermal-magnetic circuit breakers: These use a combination of thermal and magnetic sensors to detect overcurrent and overvoltage conditions.
• Magnetic-only circuit breakers: These use a magnetic sensor to detect overcurrent conditions.
• Thermal-only circuit breakers: These use a thermal sensor to detect overcurrent conditions.
• Electronic circuit breakers: These use electronic sensors and control circuits to detect overcurrent and overvoltage conditions.