Vacuum Circuit Breaker

Circuit breakers must make and break all currents withing the scope of their ratings, from small inductive and capacitive load currents up to the short-circuit current, and this under all fault conditions in the power supply system such as earth faults, phase opposition and so on.

For more information, please refer to the PDF 'Vacuum switching technology' on the right hand side.


SION Vacuum Circuit Breaker

The newest vacuum circuit breaker generation of Siemens (called SION) was successfully introduced in January 2006.


Vacuum Circuit Breakers 3AH47

The electrical power supply for railway systems requires circuit breakers with special features.


Vacuum Circuit Breaker 3AH3

Circuit breakers must make and break all currents within the scope of their ratings: From small inductive and capacitive load currents up to high short-circuit currents, controlling all fault conditions in the power system at the same time.



Vacuum Circuit Breaker 3AH4

Certain applications, especially in the industry, need high and up to very high numbers of operating cycles.


Vacuum Circuit Breakers 3AH5

3AH5 vacuum circuit breakers control all switching duties in medium-voltage systems.