Vacuum Interrupters

Reliability at the highest stage

Description

Vacuum Interrupters

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.

Details

Vacuum Interrupters

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.

High-duty contact material

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

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.

A fully automatic test equipment

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.

A position monitoring of the built-in parts

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.

Technical Data

Our portfolio

Rated Voltage

Rated current

Rated current

Contact stroke

External insulation

Electrical Life

for

short-circuit-breaking

normal

 

designed for

with rated normal current

Circuit Breaker

12 k

50 kA

4000 A

8 mm

air / solid / SF6

10.000 cycles

17,5 kV

63 kA

4000 A

8 - 11 mm

air / solid / SF6

10.000 cycles

24 kV

31.5 kA

3150 A

8 - 11 mm

air / solid / SF6

10.000 cycles

40,5 kV

40 kA

3150 A

18 - 20 mm

air / solid / SF6

10.000 cycles

52 kV

31.5 kA

2500 A

25 mm

solid / SF6

10.000 cycles

Recloser

27 kV

16 kA

800 A

11 mm

solid

500.000 cycles

38 kV

16 kA

800 A

14 mm

solid

1.000.000 cycles

Contactor

1.4 kV

8.2 kA

1400 A

2,5 mm

air

500.000 cycles

7.2 kV

5 kA

400 A

6 mm

air

1.000.000 cycles

12 kV

4.5 kA

400 A

6 mm

air

500.000 cycles

24 kV

3.6 kA

800 A

8 mm

air

500.000 cycles

Load Break Switch

12 kV

4 kA

400 A

4 mm

solid

10.000 cycles

24 kV

4 kA

400 A

8 mm

solid

10.000 cycles

50 / 60 Hz

further frequencies on request

We like to extend our existing product portfolio by a suitable solution for your application.

Switching Devices

Siemens vacuum interrupters are used in all common switching devices

Siemens vacuum interrupters are used in all common switching devices

Benefit

Your benefits ...

  • Highest reliability

  • Customer-oriented design

  • Continuous product innovation

  • Local contact persons

  • Security of supply


...results from our competencies

40 years experience in the development and production
of vacuum interrupters

Central fundamental research and development

Central fundamental research and development

More than 3 million produced vacuum interrupters

More than 5 million installed vacuum interrupters

Production know-how for all core components

Production know-how for all core components