What protective features exist to detect arcing faults in aircraft electrical systems, and how are they activated?

What protective features exist to detect arcing faults in aircraft electrical systems, and how are they activated?

• A. Arc fault detectors monitor waveform anomalies and high-frequency components; they trigger protective devices or trip circuit breakers to isolate the circuit.
• B. Thermal sensors detect arcing and cut power instantly; no circuit breakers used.
• C. There are no arc fault detectors; arcs are ignored.
• D. They use visual inspection to identify arcs; no automatic action.

Answer: (B)