Siemens Automatic Transfer Switch 3KC Series

3KC Siemens Automatic Transfer Switch safely switches between two power sources and ensure continuous power supply if one power supply source fails. These devices can also switch between two loads and prevent operational failures. In addition to the automatic transfer switching equipment (3KC ATSE), a remote-controlled variant 3KC RTSE, as well as a manually operated version 3KC MTSE, are also available.


The 3KC MTSE is suited for manual transfer switching operations up to 1,600 A between two grids or two electrical loads, and can be mechanically interlocked. Used in industrial and infrastructure applications, all of these transfer switching devices fulfill the requirements according to the IEC 60947-6-1 and IEC 60947-3 standards. 3KC transfer switching equipment offers a convenient and safe solution for switching over power supply systems in the event of line fluctuations. Systems are switched over without brief parallel operation and on all poles. Fast transfer switching ensures a short load downtime. Integration of transfer switching and control in one single unit enables the combination of high performance and easy installation. Wherever safe isolation of low-voltage networks is important, our switch disconnectors, switch disconnectors with fuses, and fuse switch disconnectors provide the perfect answer every time.

Contact us


  • Reasonable structure, small volume, nice appearance, provided with protective shield, safer and more reliable power supply.
  • Complete protective functions, including short circuit, overload, open phase and loss-of-voltage protection.
  • Noiseless, energy saving, simple installation, easy operation, reliable and stable performance.


  • Fire-fighting equipment
  • Smoke Extract Fans
  • Sprinkler pumps
  • Emergency lights


Type: automatic, manual

Mounting: busbar

Other characteristics:4-pole, 3-pole

Primary current : Min.: 16 A /Max.: 6,300 A