Breaking capacity of three phase circuit breaker

Q.  The breaking capacity of a three phase circuit breaker is given by
- Published on 18 Nov 15

a. Service line voltage * rated symmetrical current in amperes * 10-6 MVA
b. √3 * Service line voltage * rated symmetrical current in amperes * 10-6 MVA
c. 1.1* Service line voltage * rated symmetrical current in amperes * 10-6 MVA
d. √2 * Service line voltage * rated symmetrical current in amperes * 10-6 MVA

ANSWER: √3 * Service line voltage * rated symmetrical current in amperes * 10-6 MVA

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