What are the difference between C-Curve and D-Curve for
MCB's.

Answer Posted / stephy

B-curve: magnetic trip units operate between 3 & 5 In
protection of very long cables
protection of networks supplied by generators

C-curve: magnetic trip units operate between 5 & 10 In
protection of standard networks

D-curve: magnetic trip units operate between 10 & 14 In
protection of circuits that supply high inrush
current loads: transformers, motors, etc

Is This Answer Correct ?    13 Yes 6 No



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