Vacuum Interrupters

Reliability at the highest stage

Description
Details
Technical Data
Switching Devices
Applications
Benefit

Today about 80 percent of power network operators decide in favour of vacuum switching technology.
The market share of vacuum circuit-breakers is more than 99 % in Germany.

The core component of this switching principle is the vacuum interrupter.

As a pioneer for vacuum switching technology, Siemens contributes comprehensive know-how. Decades of experience in development and production support our position as a technological leader.

Only modern, highly automated machines and production processes are applied in our factories, with quality standards and manufacturing accuracy exceeding the demands of ISO 9001 and ISO 14001 by far.

In this way we obtain high-quality products with a long working life, guaranteeing a constantly high production quality which is reproducible at any time.

Siemens vacuum switching technology – an innovation that wrote history.

The decisive advantage of the vacuum interrupter is that its properties remain constant throughout the entire life cycle, due to the hermetically tight vacuum interrupter which eliminates any external influences.

As a pioneer for this technology, we are committed to meeting very high demands concerning quality and reliability of supply.

Vacuum Interrupters - specific arc melting technology

Siemens is the only manufacturer of vacuum interrupters worldwide which produce the high-duty contact material in a specific arc melting technology itself.

Vacuum Interrupters - own metallography laboratory

We have a own metallography laboratory and are able through this to check the quality of the used materials and the high temperature brazed joints any time.

For the securing of the tightness of the mechanically most highly stressed component we regularly subject the used bellows to a life test in a fully automatic test equipment..

Vacuum Interrupters- X-ray of the complete tubes

The X-ray of the complete tubes permits us a position monitoring of the built-in parts as well as a visual check of the brazed joints if necessary.

The high quality of the used materials, the cleaning of the components, the used high vacuum brazing technology and the electrical conditioning are the key to permanent tight and absolutely reliable vacuum interrupters. Therefore these factors are subject to an extensive continuous improvement process at Siemens.

Our portfolio

Rated voltages	up to 52 kV
Short-circuit currents	up to 72 kA
Rated currents	up to 6300 A
Life-time circuit-breaker applications	up to 30.000 switching cycles
Life-time contactor applications	up to 5 million switching cycles