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 VA Rating Output Voltage Input Voltage Mounting Type Backup Time Network Compatibility Number of Outlets Type Current Rating Length Width Depth
RS Stock No. 753-1968
Mfr. Part No.UB10.242
BrandPULS
SGD428.61
Each
units
DIMENSION - - 22.25V 22.5 → 30V dc DIN Rail - - - - 10A 124mm 49mm 117mm
RS Stock No. 823-8988
Mfr. Part No.DS2000I
BrandOPTI
SGD1,106.23
Each
units
Durable 1.8kW 2000VA 220 → 240V ac 176 → 288V ac Stand Alone 6min - 4, 8 Online - 336mm 190mm 374mm
New
RS Stock No. 201-9759
Mfr. Part No.9SX3000I
BrandEaton
SGD3,046.83
Each
units
Eaton 9SX 2.7kW 3000VA 230V ac 190 → 276V ac - - - - - - - - -
RS Stock No. 823-9360
Mfr. Part No.ELP650DIN
BrandEaton
SGD302.29
Each
units
Ellipse Pro 400W 650VA 230V 165 → 285V Rack Mount, Tower 9min - 4 Line Interactive 10A 260mm 82mm 285mm
RS Stock No. 180-5496
Mfr. Part No.2906996
SGD553.62
Each
units
QUINT4 240W - 18 → 32V dc 18 → 30V dc DIN Rail - EtherCat - UPS 8.3A 35mm 125mm 130mm
RS Stock No. 180-5505
Mfr. Part No.2907074
SGD813.43
Each
units
QUINT4 720W - 18 → 32V dc 18 → 30V dc DIN Rail - - - UPS 31.4A 40mm 125mm 130mm
RS Stock No. 168-2507
Mfr. Part No.2905908
SGD2,042.19
Each
units
TRIO-UPS-2G/1AC/1AC/120V/750VA 600W 750VA 120V ac 120V ac DIN Rail 1 (600 W) min, 20 (100 W) min, 4 (300 W) min - 2 - 6A 170mm 210mm 136mm
RS Stock No. 180-5499
Mfr. Part No.2907068
SGD751.95
Each
units
QUINT4 480W - 18 → 32V dc 18 → 30V dc DIN Rail - PROFINET - UPS 16.2A 35mm 125mm 130mm
RS Stock No. 823-9357
Mfr. Part No.ELP1600IEC
BrandEaton
SGD652.45
Each
units
Ellipse Pro 1kW 1600VA 230V 165 → 285V Rack Mount, Tower 9min - 8 Line Interactive 10A 275mm 82mm 390mm
RS Stock No. 188-0193
Mfr. Part No.SMT3000RMI2UC
BrandAPC
SGD3,001.94
Each
units
Smart-UPS SMT 2.7kW 3000VA 230V 160 → 286V Rack Mount - - 1 Line Interactive - 480mm 683mm 86.1mm
RS Stock No. 869-4997
Mfr. Part No.NPW 1000
BrandRiello
SGD408.81
Each
units
Net Power 600W 1000VA 230V 220 → 240V ac Desktop - - 4 Line Interactive - 160mm 146mm 350mm
RS Stock No. 714-0158
Mfr. Part No.TS650B
BrandOPTI
SGD159.05
Each
units
Thunder Shield 360W 650VA 230V 230V ac Stand Alone 21min - 2 Line Interactive - 320mm 97mm 135mm
New
RS Stock No. 745-1916
Mfr. Part No.5PX3000iRT3U
BrandEaton
SGD2,736.25
Each
units
5PX 2.7kW 3000VA 230V 150 → 294V Rack Mount, Stand Alone 9min - 9 Line Interactive - 130.7mm 441mm 497mm
RS Stock No. 823-9398
Mfr. Part No.5P850iR
BrandEaton
SGD920.54
Each
units
5P 600W 850VA 230V 160 → 294V Rack Mount 12min - 8 Line Interactive 10A 1U 438mm 509mm
RS Stock No. 188-0196
Mfr. Part No.SMT750RMI2UC
BrandAPC
SGD948.45
Each
units
Smart-UPS SMT 500W 750VA 230V 160 → 286V Rack Mount - - 1 Line Interactive - 432mm 409mm 86mm
New
RS Stock No. 201-9773
Mfr. Part No.5SC750i
BrandEaton
SGD440.15
Each
units
Eaton 5SC 525W 750VA 230V ac 184 → 276V ac - - - - - - - - -
RS Stock No. 768-8761
Mfr. Part No.IDG 1600
BrandRiello
SGD401.34
Each
units
iDialog Plus 960W 1600VA 230V 220 → 240V ac Stand Alone - - 6 Offline - 275mm 97mm 315mm
New
RS Stock No. 201-9760
Mfr. Part No.5SC1000IR
BrandEaton
SGD1,001.54
Each
units
Eaton 5SC 700W 1000VA 230V ac 184 → 276V ac - - - - - - - - -
RS Stock No. 823-8979
Mfr. Part No.DS1000IL
BrandOPTI
SGD725.57
Each
units
Durable 900W 1000VA 220 → 240V ac 176 → 288V ac Stand Alone 6min - 4 Online - 222mm 144mm 353mm
RS Stock No. 869-4993
Mfr. Part No.NPW 800
BrandRiello
SGD142.06
Each
units
Net Power 480W 800VA 230V 220 → 240V ac Desktop - - 4 Line Interactive - 142mm 100mm 287mm
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