UPS Uninterruptible Power Supplies

An uninterruptible power supply, commonly known as "UPS Power Supply" is a device that is designed to supply power to your computers, servers and data centres in case of main power failure, electrical surge or unexpected power cut off. These devices contain a battery that guarantees power to your computer system for a certain period of time, creating a time period long enough for saving the current task and shutting off the computer. For further reading, see our complete guide to uninterruptible power supplies (UPS).




UPS Uninterruptible Power Supply Types?


There are several types of UPS systems available on the market:


  • Online UPS - A system of supplying power by converting AC input (utility power) to DC and reconverting it to stable AC by the inverter while constantly charging the batteries. Supplies power without momentary power breaks in the event of a power outage.

  • Standby UPS - A system where, normally AC input (utility power) is output as is to connected devices and when a power outage or abnormal voltage is detected, inverter starts feeding using power from the batteries. In the event of a power outage, a few milliseconds of momentary break occurs in AC output.

  • Parallel processing UPS - While power from AC input (utility power) is supplied, the bidirectional inverter connected in parallel corrects voltage and absorbs noise. Because this is the online inverter (parallel) system, it has both high efficiency and high reliability.

  • Hybrid UPS - This system consists of three modes: double conversion mode, economy mode, and active filter mode. The UPS automatically selects the power feeding mode to best suit the power situation and load conditions. It is possible to shift between the respective modes with no momentary break in output voltage. Double conversion mode is selected when the power situation is poor and economy mode is selected when the power situation is good.


How to choose the right UPS device


A UPS power supply may vary in the backup time, size, numbers and type of communication ports. Some more expensive models are equipped with an intelligent system that automatically shut down connected devices to ensure that no data is lost and the device shutdown is safe. All of these aspects need to be considered before making the final decision on buying one model or another.


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Description Price Model Power Rating Input Voltage Output Voltage VA Rating Backup Time Mounting Type Communications Current Rating Number of Outlets Type Length Width Depth
RS Stock No. 473-1045
Mfr. Part No.6EP1931-2DC21
BrandSiemens
$301.26
Each
units
SITOP DC - 22 → 29V dc 21.5 → 28.5V dc - - DIN Rail Serial Port, USB 6A - - 125mm 50mm 125mm
RS Stock No. 499-9601
Mfr. Part No.6EP1931-2FC21
BrandSiemens
$661.05
Each
units
SITOP DC - 22 → 29V dc 21.5 → 28.5V dc - - DIN Rail USB 40A - - 125mm 102mm 125mm
RS Stock No. 712-7060
Mfr. Part No.EA-UPS Informer Guard LCD2 650 AP
$213.77
Each
units
Guard LCD 2 390W 175 → 300V ac 230V ac 650VA 3.5min Stand Alone USB - 2 Line Interactive 142mm 100mm 287mm
RS Stock No. 768-8821
Mfr. Part No.SEP 700
BrandRiello
$862.49
Each
units
Sentinal Pro 560W 220 V ac, 230 V ac, 240 V ac - 700VA - Stand Alone Serial Port, USB - 4 Line Interactive, Online 235mm 158mm 422mm
RS Stock No. 869-5013
Mfr. Part No.VSD 3000
BrandRiello
$1,390.70
Each
units
Vision Dual 2.7kW 220 → 240V ac 220 → 240V ac 3000VA - Rack Mount DB9 with RS-232, USB - 9 Line Interactive 625mm 87mm 450mm
RS Stock No. 739-7878
Mfr. Part No.2320241
$724.85
Each
units
QUINT-UPS/ 24DC/ 24DC/40 - 24V dc 24V dc - - DIN Rail - - - - 130mm 47mm 125mm
RS Stock No. 869-5019
Mfr. Part No.VSD 2200
BrandRiello
$1,353.11
Each
units
Vision Dual 1.98kW 220 → 240V ac 220 → 240V ac 2200VA - Rack Mount DB9 with RS-232, USB - 8 Line Interactive 625mm 87mm 450mm
RS Stock No. 753-1968
Mfr. Part No.UB10.242
BrandPULS
$624.97
Each
units
DIMENSION - 22.5 → 30V dc 22.25V - - DIN Rail - 10A - - 124mm 49mm 117mm
RS Stock No. 667-5394
Mfr. Part No.PVUA 24/24-10
BrandBlock
$480.96
Each
units
PV 480W 22 → 29V dc 24V dc - - DIN Rail Serial Port 10.8A - - 127mm 40mm 163mm
RS Stock No. 823-9394
Mfr. Part No.5P650iR
BrandEaton
$692.81
Each
units
5P 420W 160 → 294V 230V 650VA 9min Rack Mount RS232, USB 10A 8 Line Interactive 1U 438mm 364mm
RS Stock No. 823-9354
Mfr. Part No.ELP850FR
BrandEaton
$417.70
Each
units
Ellipse Pro 510W 165 → 285V 230V 850VA 9min Rack Mount, Tower USB 10A 4 Line Interactive 260mm 82mm 285mm
RS Stock No. 823-9411
Mfr. Part No.5PXEBM72RT2U
BrandEaton
$1,731.62
Each
units
5PX - - - 3000VA 285min Rack Mount - - - Extended Battery Module 2U 441mm 647mm
RS Stock No. 505-5421
Mfr. Part No.2866213
$764.34
Each
units
Quint DC - 24V dc 24V dc - - DIN Rail - 20.6A - DC 130mm 64mm 125mm
RS Stock No. 823-9372
Mfr. Part No.ELP1200DIN
BrandEaton
$454.59
Each
units
Ellipse Pro 750W 165 → 285V 230V 1200VA 9min Rack Mount, Tower USB 10A 8 Line Interactive 275mm 82mm 390mm
RS Stock No. 823-9357
Mfr. Part No.ELP1600IEC
BrandEaton
$579.30
Each
units
Ellipse Pro 1kW 165 → 285V 230V 1600VA 9min Rack Mount, Tower USB 10A 8 Line Interactive 275mm 82mm 390mm
RS Stock No. 869-5007
Mfr. Part No.VSD 1100
BrandRiello
$881.85
Each
units
Vision Dual 900W 220 → 240V ac 220 → 240V ac 1100VA - Rack Mount DB9 with RS-232, USB - 8 Line Interactive 425mm 87mm 450mm
RS Stock No. 668-0545
Mfr. Part No.6EP1933-2NC01
BrandSiemens
$949.14
Each
units
SITOP UPS500P 168W 22.5 → 29V dc 23.3 → 24.7V dc - - - USB 7A 1 Switch Mode 80mm 400mm 80mm
RS Stock No. 823-9391
Mfr. Part No.5P1550i
BrandEaton
$1,159.77
Each
units
5P 1.1kW 160 → 294V 230V 1550VA 13min Tower RS232, USB 10A 8 Line Interactive 230mm 150mm 445mm
RS Stock No. 823-9360
Mfr. Part No.ELP650DIN
BrandEaton
$263.32
Each
units
Ellipse Pro 400W 165 → 285V 230V 650VA 9min Rack Mount, Tower USB 10A 4 Line Interactive 260mm 82mm 285mm
RS Stock No. 741-8726
Mfr. Part No.6EP1933-2EC41
BrandSiemens
$507.11
Each
units
SITOP UPS500S 360W 24V dc 24V dc - - DIN Rail USB 17.5A 1 Switch Mode 120mm 125mm 120mm
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