What indicates that a circuit breaker has tripped?

What indicates that a circuit breaker has tripped?

• A. Red button
• B. White rim at the base
• C. Green indicator
• D. No indicator

Answer: (B)

When a circuit breaker trips, the mechanism moves out of the ON position to interrupt the circuit, and a clear visual cue shows that it’s no longer supplying power. In this item, the white rim at the base is the designated visual cue indicating the breaker has tripped. It provides a quick, easy-to-see signal that the circuit is open, which is why it’s the best indicator in this context. The red reset button is typically used after a trip to restore power, a green indicator usually shows power is on, and having no indicator wouldn’t reliably reveal the trip status.

When a circuit breaker trips, the mechanism moves out of the ON position to interrupt the circuit, and a clear visual cue shows that it’s no longer supplying power. In this item, the white rim at the base is the designated visual cue indicating the breaker has tripped. It provides a quick, easy-to-see signal that the circuit is open, which is why it’s the best indicator in this context. The red reset button is typically used after a trip to restore power, a green indicator usually shows power is on, and having no indicator wouldn’t reliably reveal the trip status.