[rumanator]

It sounds you're describing faults, aren't you? I mean, don't you agree that exceeding the breaker's capacity is a fault?

https://en.wikipedia.org/wiki/Circuit_breaker

I don't believe this is up for discussion: the circuit breaker is a device that is designed and used to protect a circuit against fault conditions. That's the whole point of their use: if a fault condition is detected, the circuit breaker breaks the circuit to about the fault to propagate or damage the circuit and/or any device connected to it.