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. 668-0532
Mfr. Part No.6EP1933-2EC51
BrandSiemens
$832.74
Each
units
SITOP UPS500S 360W 22 → 29V dc 24V dc - - DIN Rail - 15.2A 1 Switch Mode 125mm 120mm 125mm
RS Stock No. 761-7630
Mfr. Part No.2320254
$557.80
Each
units
QUINT-UPS/ 24DC/ 24DC/ 5/1.3AH - 18 → 30V dc 18 → 30V dc - 5min DIN Rail - 9.3A 1 - 138mm 88mm 125mm
RS Stock No. 823-9344
Mfr. Part No.ELP850IEC
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. 761-7649
Mfr. Part No.2320267
$476.07
Each
units
QUINT-UPS/ 24DC/ 24DC/10/3.4AH - 18 → 30V dc 18 → 30V dc - 10min DIN Rail - 18.6A 1 - 169mm 120mm 125mm
RS Stock No. 869-5003
Mfr. Part No.NPW 2000
BrandRiello
$643.05
Each
units
Net Power 1.2kW 220 → 240V ac 230V ac 2000VA - Desktop RS232, USB - 6 Line Interactive 205mm 146mm 397mm
RS Stock No. 779-3771
Mfr. Part No.SMT3000RMI2U
BrandAPC
$3,627.68
Each
units
Smart-UPS LCD 2.7kW 230V 230V 3000VA 3min Rack Mount USB - 8 Line Interactive 480mm 86mm 683mm
RS Stock No. 869-5000
Mfr. Part No.NPW 1500
BrandRiello
$513.33
Each
units
Net Power 900W 220 → 240V ac 230V ac 1500VA - Desktop RS232, USB - 6 Line Interactive 205mm 146mm 397mm
RS Stock No. 779-3825
Mfr. Part No.BK350EI
BrandAPC
$242.60
Each
units
Back-UPS CS 210W 230V 230V 350VA 9min Stand Alone USB 7A 6 Standby 91mm 165mm 284mm
RS Stock No. 869-4993
Mfr. Part No.NPW 800
BrandRiello
$197.12
Each
units
Net Power 480W 220 → 240V ac 230V ac 800VA - Desktop USB - 4 Line Interactive 142mm 100mm 287mm
RS Stock No. 768-8880
Mfr. Part No.SDH 3000 ER
BrandRiello
$1,948.40
Each
units
Sentinel Dual 2.4kW 220 V ac, 230 V ac, 240 V ac - 3000VA - Stand Alone Serial Port, USB - 9 Line Interactive, Online 87mm 450mm 625mm
RS Stock No. 823-9376
Mfr. Part No.ELP1600DIN
BrandEaton
$632.60
Each
units
Ellipse Pro 1kW 165 → 285V 230V 1600VA 9min Rack Mount, Tower USB 10A 8 Line Interactive 275mm 82mm 390mm
RS Stock No. 823-9363
Mfr. Part No.ELP1200FR
BrandEaton
$454.58
Each
units
Ellipse Pro 750W 165 → 285V 230V 1200VA 9min Rack Mount, Tower USB 10A 8 Line Interactive 275mm 82mm 390mm
RS Stock No. 779-3759
Mfr. Part No.SUA5000RMI5U
BrandAPC
$6,395.89
Each
units
Smart-UPS 4kW 230V 230V 5000VA 9min Rack Mount DB9, RS232, Smart Slot - 14 Line Interactive 483mm 222mm 660mm
RS Stock No. 751-2601
Mfr. Part No.2320335
$919.19
Each
units
UPS-BAT/VRLA/24DC/38AH - 24V dc - - - - - 50A - - 210mm 330mm 197mm
RS Stock No. 823-9401
Mfr. Part No.5P1550iR
BrandEaton
$1,547.42
Each
units
5P 1.1kW 160 → 294V 230V 1550VA 13min Rack Mount RS232, USB 10A 8 Line Interactive 1U 438mm 554mm
RS Stock No. 823-8988
Mfr. Part No.DS2000I
BrandOPTI
$1,118.87
Each
units
Durable 1.8kW 176 → 288V ac 220 → 240V ac 2000VA 6min Stand Alone RS232, USB - 4, 8 Online 336mm 190mm 374mm
RS Stock No. 823-9341
Mfr. Part No.ELP650IEC
BrandEaton
$287.55
Each
units
Ellipse Pro 400W 165 → 285V 230V 650VA 9min Rack Mount, Tower USB 10A 4 Line Interactive 260mm 82mm 285mm
RS Stock No. 473-1017
Mfr. Part No.6EP1931-2EC21
BrandSiemens
$395.45
Each
units
SITOP DC - 22 → 29V dc 21.5 → 28.5V dc - - DIN Rail Serial Port, USB 15A - - 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. 768-8843
Mfr. Part No.402012
BrandRiello
$1,898.80
Each
units
Sentinal Pro 2.4kW 220 V ac, 230 V ac, 240 V ac - 3000VA - Stand Alone Serial Port, USB - 9 Line Interactive, Online 333mm 190mm 446mm
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