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Technical Specifications
Liebert STS2 ST400A

The Liebert STS2 from Vertiv is making it easier to protect your critical equipment by giving your single cord loads the reliability of dual cord power or by providing added redundancy to your dual cord devices. With a single, space-saving unit, the Liebert STS2 static transfer switch provides automatic switching between two different AC power sources. This is the 400A version in both 60Hz and 50Hz. Multiple input voltages are available. Designed for use in dual-bus power applications, this solution combines fast switching between AC power sources, power isolation, monitoring and grounding into a single package.

Warranty : One Year Limited Warranty Against Defects in Material and Workmanship
Operating Specifications
Ampere Size
400 amps
Voltage
208, 220, 240, 380, 415, 480, 600 VAC
Weight
1200 lbs
Weight
544 kg
Height
77 in
Height
1956 mm
Width
38 in
Width
965 mm
Depth
32 in
Depth
813 mm

*To see model-specific downloads, you will need to go to the model-specific product page by selecting the model name in the specifications chart above.

Benefits

Operates efficiently 
Front access to all components provides simplifies installation and maintenance, and reduces amount of floorspace required for access.
Internal CANBUS protocol: high-bandwidth communication between system components via twisted-pair cables.
Triple redundant logic with dual power feeds.
Standard on-unit monitoring and optional centralized monitoring capability provide continuous system visibility.
When applied as primary side switching, cost are lower due to requiring only one power distribution unit, a lower current due to 480V vs. 208V, and lower installation and wiring cost. 

Features

Automatic switching for dual bus loads
Requires only front access for easy installation and maintenance
Offers primary or secondary side switching 
100% rated, fuseless design

Find Your Area Contact

Products Support Contacts

Showing contacts for Ohio, 43215, USA Change
(UPS HIRE) Support for Products Purchased Directly from Vertiv (Email)
United Kingdom
Product areas of focus: Uninterruptible Power Supplies (UPS), DC Power Systems, Industrial AC and DC Systems, Power Distribution, Power Transfer Switches, Thermal Management, Integrated Solutions, Outdoor Enclosures, Racks and Containment, Software, Monitoring, Desktop KVM and KM, IP KVM, Secure KVM, Serial Consoles and Gateways, Digital Infrastructure Solutions, Custom Thermal
3T Worldwide QRI (Nigeria) Limited
5A, Iron Bar Street, Off Providence road, Lekki Peninsula Phase 1 Lagos 23401 Nigeria
Product areas of focus: DC Power Systems, Power Transfer Switches, Power Control and Monitoring, Thermal Management, Integrated Solutions, Outdoor Enclosures, Software, Monitoring, Control Room Infrastructure, Mobile Workstation
Attractive Solutions
2 Ali Ameen St., Nasr City Cairo Egypt
Product areas of focus: Uninterruptible Power Supplies (UPS), DC Power Systems, Industrial AC and DC Systems, Power Distribution, Power Transfer Switches, Emergency Lighting, Power Control and Monitoring, Thermal Management, Integrated Solutions, Outdoor Enclosures, Racks and Containment, Control Room Infrastructure, Medium Voltage Inverter

Frequently Asked Questions

Q
Do I need a static switch in my power distribution system?
A
There are many ways to design a power backup and distribution system. Please reference our white paper on Emerging Power Architectures in the Reports section on this web page or consult your local sales office for suggestions on how best to leverage and compare your existing equipment, power system goals and our capabilities.
Q
Can the product be customized?
A
There are many custom solutions available for our products. Please contact your local sales office for more information.
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