Which of the following is the least expensive protection for over current in low voltage system?

Which of the following is the least expensive protection for over current in low voltage system? 

(A) Rewireable fuse (B) Isolator (C) Oil Circuit breaker (D) Air break circuit breaker
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1 Answer

Answer :

Which of the following is the least expensive protection for over current in low voltage system? 

(A) Rewireable fuse (B) Isolator (C) Oil Circuit breaker (D) Air break circuit breaker

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