Difference Between Mini Circuit Breaker Characteristic Curve C and D

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  • C curve’s short circuit current is 5In~10In,the breaker will not release with time no less than 0.1s while the current reach to 5In; And it will release within 0.1s while the current reach to 10In.
  • D curve’s short circuit current is 10In~20In,the breaker will not release with time no less than 0.1s while the current reach to 10In; And it will release within 0.1s while the current reach to 20In.
  • C curve’s breaker usually be used in power distribution system and light control,but D curver’s breaker be used in industry,such as electric motor.

 

C curve graph

D curve graph

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