IEC outdoor gas insulated (SF6) circuit breaker OHB

Medium Voltage circuit breaker with mechanical operating mechanism designed for distribution systems up to 40.5 kV, 2500 A, 31.5 kA.

These circuit breakers are of live tank design. They are used in power distribution for control and protection of lines and for control and protection of transformers, rectifier units, capacitor banks, etc. Thanks to the autopuffer breaking technique, they do not generate operating overvoltages. This means they are also highly suitable for retrofitting, where the plant insulating materials may be sensitive to dielectric stresses.

Why ABB?

  • Maintenance-free poles
  • Upper and lower terminals with NEMA4 drilling
  • Gas pressure control device for each pole
  • Poles made with porcelain insulators, assembled by means of flanges with terminals
  • Inspection window in the pole supporting casing near the operating mechanism signals.

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