1. Electricity - Electronics
  2. Switch and Relay
  3. Power contactor
  4. Siemens Medium-voltage – Power distribution

Power contactor 3TM Series

power contactor
power contactor
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Electrical characteristics
single-pole, multipole, 2-pole, medium-voltage
industrial, power distribution
Other characteristics
IEC, compact
Primary current

315 A, 320 A, 400 A, 450 A

Load voltage

7.2 kV, 12 kV, 15 kV


3TM vacuum contactors – ideal for high switching frequencies Compact, energy-efficient 3TM vacuum contactors are flexible to use and are suited for all relevant areas in medium-voltage power distribution, for rated voltages of 7.2 to 15 kV and rated operational currents up to 450 A. They ensure safe switching of operational currents and overload currents in categories AC-1 to AC-4 – even during voltage dips. From conveyor systems and elevators, pumping stations, transformer and transfer stations, reactive power compensation equipment, and industrial network distribution systems, to electric furnaces, data centers, wind power plants, and photovoltaic panels – vacuum contactors ensure end-to-end protection for your system operation. Flexible application • Individually adjustable switching times • Various mounting positions • Flexible control of linking system Robust design • Highly shock-resistant • Suitable for ambient temperatures from -40° Celsius to +70° Celsius • Suitable for applications in altitudes of up to 5,000 m variable design • Freely definable pole-center distances • 1-pole, 2-pole, and 3-pole versions • Easy replacement and modification as well as easy retrofitting of components Conformity with global standards • Certified in accordance with IEC 62271-106 • Certified in accordance with UL 347 • Certified in accordance with GOST P 52565-2006 • Certified in accordance with CSA C22.2 253-09 • Certified in accordance with GB/T14808 • Certified in accordance with DNVGL-CG-0339


*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.