Static Transfer Switches

Static Transfer Switches

Static Transfer Switches (STS) are essential for achieving highly reliable and redundant supply to critical systems.

The STS provides power to items requiring a single AC supply by selecting from one of many input AC supplies. If one supply becomes unavailable the STS automatically transfers the critical load to an alternative AC supply source. Manual selection of supply is also possible.

STSs are suitable for back up power supply protection where multiple independent supplies are available on stand-by and ready for use when required.

Typical STS applications include:

  • Data centres to eliminate single points of (power supply) failure
  • Active maintenance bypass for UPS
  • Fault isolation

STS features and benefits

  • Thycon’s Point of Wave Transfer Technology
  • High fault clearing capability
  • High overload capacity
  • Soft-start control
  • Fibre optic firing control
  • Robust technology
  • High efficiency
  • High reliability
  • Cost effective
  • Low maintenance cost
  • Compact, modular construction
  • Indoor or outdoor enclosures
  • Australian made


  • Soft-start facility
  • Remote monitoring
  • Thycon power system monitor
  • Container modules




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