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Anord Mardix
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At Anord Mardix, we work with Schneider Electric, leaders in this field, to ensure that our STS units offer true redundancy and exceptional reliability for automatic transfer between power sources. We understand that you need a continued supply of power to any critical load and that any switching needs to be seamless.

With those essential elements in place, our STS range also has the advantage of being swappable in bypass mode – no interruptions – and available with surge protection and seismic floor stand on request. Talk to our experts if you’re considering STS and our team can give you the advice that you need.

  • Modular STS – no more guessing at which circuit boards have failed​
  • Compact design with extractable and replaceable STS Power Module that can be swapped in under 30 minutes while maintaining power to load via bypass​
  • Hot swappable fans and power supplies
  • STS Listed to UL 60950 and UL 891​
  • Automatically transfer power to a stable alternate source in less than 4ms under normal operating conditions. Even under extreme conditions, such as 180 degrees out of phase, our STS will have detection and automatic transfer times that are up to 10 times faster than many other switches
Ampere ratings 250, 400 and 600A
Voltage range Up to 480V
Frequency 50Hz/60Hz
Admitted power factor​ No restriction​
Admitted overload​ 110% for 60 min, 150% for 2 min​
Inrush limiting​ 100% of transformer rating​
Dimensions​ W 1320mm x D 890mm x H 2135mm ​
Weight​ 1500 lbs​
Storage temperature​ -25 to 70 deg C (-13 to 156 deg F)​
Operating temperature​ 0 to 40 deg C (32 to 104 deg F) up to 50 deg C with derating​
Switch configuration 3-Pole 6 Switch, Redundant Load (standard)
3-Pole 5 Switch, Single Load (optional)
Minimum airflow (m3/h)​ 627​
Max relative humidity (non-condensing)​ 95%​
IP protection rating​ IP21C​
Color ​ Standard Black, Others Available
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