Uptime / Critical Power & Cooling / Liebert® STS2
Power Distribution — Vertiv™ Liebert® STS2
Liebert® STS2
A static transfer switch that gives single-corded loads the reliability of dual-corded power, switching between two independent UPS sources in a quarter cycle.
100–1,850 A
Quarter-cycle transfer
Dual-bus redundancy
Request a Quote
or call (800) 222-1440
What’s Built In
Automatic, seamless transfer between two power sources.
Automatic, seamless transfer between the outputs of two independent UPS systems in a dual-bus configuration
Both 60Hz and 50Hz systems, with multiple input voltages from 208–600VAC
If the primary UPS fails, loads transfer to the alternate source automatically
Available from 100A to 1,850A across the ST, SR, and SX series
Combines fast switching, power isolation, monitoring, and grounding in a single package
Gives single-cord loads the reliability of dual-cord power, or adds redundancy to devices that are already dual-corded. Designed for dual-bus power applications in a single, space-saving unit.
Model range
Three series, scaled by amperage.
ST Series, 100–1,000A
77″ H × 30–84″ W × 32″ D · 780–2,500 lbs
SR Series, 400–600A
69.4″ H × 31.7″ W × 32″ D · 1,200 lbs
SX Series, 1,200–1,850A
88″ H × 25.7″ W × 35.6″ D · 1,430 lbs
Full Specifications
Every number, for the people who ask for them.
Amperage range
100–1,850 A
Frequency
60Hz or 50Hz
Input voltages
208, 220, 240, 280, 400, 415, 480, 575, 600 VAC
Height
69.4–88 in, by series
Width
25.7–84 in, by amperage
Depth
32–35.6 in
Weight
780–2,500 lbs, by amperage
Warranty
One-year limited, defects in material and workmanship
Best fit
Single-corded loads needing dual-bus redundancy
Exact amperage, series, and input voltage are confirmed at quote against your dual-bus configuration.
Ready to spec the STS2?
Tell us which loads are single-corded and we’ll size the switch.