What indicates that a Push Pull Circuit Breaker has popped?

A Push Pull Circuit Breaker is designed to safeguard electrical circuits by interrupting the flow of current under fault conditions. One of the key indicators that signify a circuit breaker has tripped, or "popped," is the physical position of the breaker itself.

In this case, a white band across the button of the breaker serves as a clear visual signal that it has tripped and is no longer able to conduct electricity. This feature helps flight crews quickly assess the status of various electrical components without needing to conduct extensive troubleshooting procedures.

Each design aspect of circuit breakers is implemented to ensure quick recognition of their status, enhancing safety and efficiency in various operational environments, such as those found in aircraft systems.