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Why would Curve 1 circuit breakers trip before Curve 2 circuit breakers?

Answer

Curve 1 should always trip last in a discriminated system as it has a slower tripping curve than a curve 2.  Curve 1 is the orange toggle breaker that is a slow tripping circuit breaker, has a 10-20x inrush current, whereas Curve 2 has a 5-10x inrush current rating.

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