Repeated tripping can indicate a fault, overload, wiring problem or equipment failure and requires approved troubleshooting.
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ELECTRICAL & AVIONICSBEGINNER
Circuit breaker
CB Abbreviation · electrical circuit breaker Synonym
A resettable protective device that interrupts an electrical circuit when current exceeds its designed condition.
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How the term is used
Aircraft circuit breakers protect wiring and equipment from overcurrent. Some also provide isolation, but their operational use and reset policy are controlled by aircraft and operator procedures.
Where you may encounter it
Technicians identify the correct circuit, configuration and power state before pulling, resetting or replacing a breaker.
Do not repeatedly reset a tripped breaker or use it as a routine switch unless approved procedures specifically allow it.
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TECHNICAL Q&A · 1 answersWhy must electrical-power discussions state aircraft applicability?Solved discussion
TECHNICAL Q&A · 0 answersWhy must avionics and electrical explanations state aircraft applicability?Open discussion
TECHNICAL Q&A · 0 answersWhat makes an electrical troubleshooting question answerable without sharing controlled data?Open discussion
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