Specifications

Liebert PSA Line-Interactive UPS:  
500 – 1500 VA, 1-Phase
Liebert PSA is an economical 
line-interactive UPS that offers 
full-featured power protection for 
small office computers and electronic 
equipment. It is available in the 
following sizes: 500, 650, 1000 and 
1500 VA at 120 VAC or 230 VAC. 
Designed with simple controls 
for easy operation, the Liebert 
PSA provides up to five minutes 
of back-up time at full load – 
more than enough time to save 
work in process and shut down 
your connected equipment. 
USB shutdown software and 
a USB cable are also included, 
to allow remote alerts and 
automated graceful shutdown of 
the connected systems. Liebert 
PSA offers unique features and 
extraordinary performance not 
normally found in similar products 
in this price range.
Other Standard Features Included  
On All Liebert PSA Models: 
Three to six battery-backed UPS outlets,  
depending on model size.
One to two surge-only outlets,  
differentiated by color.
Up to five minutes of battery backup time at full load.
User replaceable batteries.
Advance early warning of UPS shutdown.
RJ-45 port for data line surge protection.
Two-year warranty.
High-Performance Power Protection For PC’s And Office Equipment
Liebert Power Monitoring 
Capabilities
The operation of the Liebert PSA 
can be monitored using:
Liebert MultiLink
®
 Automated  
System Shutdown Software.
For more information,  
see pages 52 and 53.
1000/1500 VA back view
500/650 VA back view
Line-Interactive UPS
TVSS & 
EMI/RFI
Filter
AVR &
Transfer
Switch
Source Load
Battery Inverter
Desktop UPS
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DISCONTINUED 
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