Vacuum contactors

Why Siemens vacuum contactors?

Siemens 3TM vacuum contactors are compact, flexible and reliable contactors that safely switch operating currents in medium-voltage power distribution systems.

3TM vacuum contactors are suitable for rated voltages of 7.2 to 15 kV and rated operational currents up to 450 A, ensuring end-to-end protection for many system operations, including:

Conveyor systems and elevators
Pumping stations
Transformer and transfer stations
Electric furnaces
Data centers
Wind power plants
Photovoltaic panels

Siemens 3TM vacuum contactors are available in several versions, including:

Contactor 3TM1: A single-pole contactor for special applications
Contactor 3TM3: For high-frequency switching
Contactor 3TM4: Combines frequent load switching with short-circuit protection
Contactor 3TM4-HC: A contactor-fuse combination available in compact and high-current versions

Siemens MV contactor 3TM family key visual gradient image.

Key benefits

Enhance flexibility and reliability

Get optimal integration due to a flexible mounting position and high reliability for 1 Mio maintenance-free operations.

Count on our support

Experience short lead times and responsive costumer support.

Reduce energy consumption and OpEx

Minimize power consumption during operation to increase energy efficiency and decrease OpEx.

Featured capabilities

Innovative and reliable vacuum technology

Our vacuum contactors are sustainable and F-gas-free for an ecological energy transition, maintenance-free and conform with global standards.

Compact and flexible

Siemens vacuum contactors are available in 1-pole and 3-pole versions with a contactor-fuse combination. You’ll get easy replacement, modification and retrofit, plus individually adjustable switching times.

Robust design

Our vacuum contactors are designed to be highly shock-resistant. They’re suitable for ambient temperatures from -40 °C bis +70 °C and applications in altitudes of up to 5,000 m.