Circuit Breaker

Circuit Breaker

Purpose of circuit breaker

  • Break the power flow
  • Contain the arcing within its chamber and snuff it out

What happens when you break a high voltage circuit without special provisions? Take a look below.

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500KV energized circuit interrupted using a switch

Cost of circuit breaker

  • 365kV dead tank gas breaker: ~$200,000
  • 138kV dead tank gas breaker: ~$100,000
  • 69kV vacuum breaker: ~$50,000
  • 15kV vacuum breaker: ~$25,000

You may be interested in switching capacitive loads using Independent Pole Operating (a.k.a. zero crossing) circuit breaker. 365kV breakers are inherently IPO. The synchronous controller costs an additional ~$20,000. To make 138kV breakers IPO, it costs roughly double.

Lead time to procure circuit breaker

~6 months

Information on cost and lead time is for your general knowledge only. Contact vendor with your equipment specifications for actual figures.

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