Siemens Industry Online Support
Siemens AG
Entry ID: 109770919, Entry date: 09/28/2021

Transfer switching equipment

  • Entry
A power failure can have serious consequences. The transfer switching equipment from Siemens enables safe switching between two power sources without interruption. The equipment consists of two switch disconnectors, ensures maximum protection with electrical and mechanical interlocks and meets the common IEC standards.

 -- Selected links to contact persons/Support, FAQs, certificates, etc. can be found below --  

Indispensable for a continuous power supply

The 3KC transfer switching equipment ensures a continuous supply of power by switching between a main power source and an alternative power source. They can also be used for load transfer switching. The devices are characterized in particular by their simple installation and their safe, reliable operation.

With manually operated transfer switching equipment (MTSE), remotely operated transfer switching equipment (RTSE) and automatic transfer switching equipment (ATSE) versions in various sizes, the 3KC transfer switching equipment provides solutions for numerous switching tasks.


Compact transfer switching equipment

  • Manual: 3KC0
  • Remote: 3KC3 and 3KC4
  • Automatic: 3KC6 and 3KC8

Transfer control devices

  • ATC3100

  • ATC6300

  • ATC6500

SENTRON switching devices:

safe, flexible, and productive

 SENTRON switching devices


  • Selectivity Tool - with the Selectivity Manager, it is possible to determine and document project-specific selectivity limits online - conveniently, quickly and simply.


Application example

Technical Basic Information - Switch Disconnectors and Transfer Switching Equipment


Manual - 3KC0 manual transfer switching equipment
3KC3 and 3KC6 transfer switching equipment
Manual - 3KC4 and 3KC8 transfer switching equipment
3KC ATC3100 Transfer Control Device
Equipment Manual – 3KC ATC6300 Transfer Control Device
Quick Selection Guide - Switch disconnectors and transfer switching equipment
Door mounted rotary operator
Flyer - Switch disconnectors and transfer switching equipment - End-to-end safety for users and systems
System Manual SENTRON 3NJ62 In-Line Plug-In Switch Disconnectors with Fuses
System Manual SENTRON 3NP1 Fuse Switch Disconnector
SENTRON Switch disconnectors 3KD Switch-disconnector
Manual - 3KC ATC6500 transfer control device
Configuration Manual - Fuse Systems
More manuals in the Industry Online Support
Configuration Manual – Switch Disconnectors


Catalog LV 10 • 04/2021 - Low-Voltage Power Distribution and Electrical Installation Technology
Catalog - Transfer Switching Equipment and Load Transfer Switches (Catalog Extract LV 10 • 04/2021)
Catalog - Switch Disconnectors (Catalog Extract LV 10 • 04/2021)



Our training courses can be found at


- Fundamentals of electrical engineering (WT-LVBGET)
- Protection concept (WT-LVBPC)

Product notes

New Auxiliary Switches for the 3K Switch Disconnectors
More Product notes in the Industry Online Support

Service & Support

Assistance with technical queries is provided at

Information in the Industry Online Support

You can find your local contact at

Contact database

Our product specialists are available to answer your technical queries at

Support request



For transfer switching equipment and load transfer switches

Declaration of Conformity
General product approval
More certificates in the Industry Online Support

CAD/CAE data 

Engineering data for CAD or CAE systems is available in the CAx Download Manager at


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