live tank circuit breakers in use in 140 countries
for applications from 72.5 kV to 800 kV, up to 80 kA.
Our high-voltage live tank circuit breakers are available for three-pole operation with a common base (FG), for single-pole operation also with a common base (FE) or for single-pole operation with separate bases (FI). 3AP1 circuit breakers up to 300 kV are equipped with one interrupter unit per pole and 3AP2 circuit breakers up to 550 kV include two interrupter units. The circuit breakers can be equipped with optional closing resistors (3AP3) for applications from 362 kV to 550 kV. The 3AP4 includes 4 interrupter units per pole and can also be delivered with closing resistors on request (3AP5).
The 3AT circuit breaker with double-nozzle system is especially suitable for special applications, such as the restrike-free interruption of low inductive and capacitive currents and the interruption of all types of short-circuits up to 80 kA, as well as HVDC applications.
The new generation of high-voltage circuit breakers is based on over 40 years of experience in the production of medium-voltage vacuum interrupters and over 5.5 million units delivered.
Siemens has introduced this proven technology to high-voltage power networks above 72.5 kV and has been gaining operational experience in European networks since 2010.
Most important characteristics and advantages:
Siemens has over 40 years of experience in producing medium-voltage vacuum interrupters and delivered more than 5.5 million units.
Siemens introduced this proven technology to high-voltage power networks in 2010. The hermetically sealed vacuum interrupters are reliable and maintenance free thanks to its “sealed for life” technology.
The most important characteristics and advantages:
Perfect for low temperatures
No CO2e (equivalent) emissions
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