Thermal circuit breaker has____________?
Correct answer: A. delayed trip action
- A. delayed trip action
- B. instantaneous trip action
- C. both of the above
- D. none of the above
Explanation
A thermal circuit breaker uses a bimetallic strip that heats and bends under sustained excess current, producing a time delay before tripping. This makes it suitable for overload protection rather than instantaneous short-circuit clearing.
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