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What is a High Voltage Circuit Breaker?

High voltage circuit breaker: A protection device for 35KV+ power systems that interrupts fault currents & switches loads. Comprises conductive, insulation, operating, and arc extinguishing components.

Master Electrician
Field: Distribution
Power Engineer
10Year<
China
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What is a High Voltage Circuit Breaker?


High Voltage Circuit Breaker definition


A type of circuit breaker used in power systems with a rated voltage of 35KV and above, used to cut or switch on loaded or unloaded circuits, as well as faulty circuits.



High Voltage Circuit Breaker components


  • Conductive part : responsible for the conduction of current

  • ‌Insulation part : prevent electric shock accident

  • ‌Operating mechanism : through the contact parting, ‌ closing action to realize the circuit to break and close. ‌

  • Arc extinguishing part : responsible for extinguishing arc, ‌ to prevent arc reignition.



高压断路器_修复后.jpeg




Main parameter


  • Short-time withstand current

  • Rated short-circuit breaking current

  • Rated short circuit duration



Mode of operation


  • Manual operation

  • Automatic operation


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