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Why 3AH36/37/38 vacuum circuit-breakers?

Siemens 3AH36/37/38 generator circuit-breakers are engineered to protect the most critical element of any power plant: the generator. While conventional equipment usually fails to handle the increased demands of generator-near fault currents, our 3AH3 generator portfolio is specifically designed to meet exactly these demands. 
 
3AH36/37/38 circuit-breakers are also your perfect choice when it comes to applications that require handling of high continuous load currents and high short-circuit current withstand capabilities.

  • up to 24 kV
  • up to 110 kA
  • up to 15,000 A
MV generator vacuum circuit-breaker - 3AH37 up to 72 kA, 4.000 A - site

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Superior protection

Type-tested to IEC/IEEE generator standards for reliable protection.

Trusted performance

Built on decades of Siemens vacuum switching expertise.

Future-proof

Highest ratings handle growing network demands without costly upgrades.

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