Mathematics · Circuit Breakers - Symmetrical Breaking Current

A three-phase, 33 kV oil circuit breaker is rated at 1200 A, 1650 MVA. Its symmetrical breaking current is:

Verified Solution4 OptionsUpdated: October 2026👁️1 View

11650√3 kA
21200√3 kA
350√3 kA✓
41200 A

Correct answer

50√3 kA

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A three-phase, 33 kV oil circuit breaker is rated at 1200 A, 1650 MVA. Its symmetrical breaking current is:

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A three-phase, 33 kV oil circuit breaker is rated at 1200 A, 1650 MVA. Its symmetrical breaking current is:

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