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GSA-AA is a resin-impregnated indoor-outdoor wall bushing available for 52 to 123 kV system voltages. Current ratings are available up to 4,000 A.​
The GSA bushing can be installed at any angle from horizontal to vertical and is equipped with a 2 kV test tap. Conductor arrangement can be either of draw lead or solid rod type.​

  • The bushing is partially discharged-free and has a very low dissipation factor, which results in a lifetime equal to that of the transformer.​
  • The insulator sheds are made from high-temperature vulcanization (HTV) silicone for unsurpassed erosion resistance.​
  • A comprehensive testing program has been performed in addition to what international standards require.​

Product scope​:

  • Voltage: 52 - 123 kV​
  • Current: ≤ 4000 A. Higher current ratings on request.
  • Technology: Resin-impregnated paper (RIP) with silicone insulator​

Get to know more

Catalogs and instructions  
Benefits of using the GSA bushing 1ZSE 2750-117
Technical guide 1ZSE 2750-112
Installation and maintenance guide 2750 515-133

General information, resin impregnated bushings  
Ordering data form (.doc format)
Please note that this is an interactive form, which can be filled in, saved and sent to us by e-mail.
1ZSC 2750-119
Bushing diagnosis and conditioning 2750 515-142
Resin impregnated paper bushings 2750 515-130
Temperature dependency for C1 and tan d for resin impregnated paper bushings 2750 515-134
Comparison between porcelain and silicone rubber for use as outdoor insulation on high voltage bushings 2750 515-136
Silicone rubber 2750 515-131

Pro/E models
Pro/E models (compressed zip file)

Dimension drawings        
Type designation Lightning impulse
Rated current
Bushing Drawing
GSA 52-AA/4000 250 4000 LF 130 052-CA 2751 362-BCA
GSA 73-AA/4000 350 4000 LF 130 073-CD 2751 362-BCD
GSA 123-AA/2000 550 2000 LF 130 123-BD 2751 362-DBD