UPS Uninterruptible Power Supplies

An uninterruptible power supply, commonly known as UPS Power Supply is easy to install a device that is designed to provide power to your computers, servers, server rooms and data centres in case of main energy failure, electrical surge or unexpected energy cut off. These devices contain a battery that guarantees power to your computer system for a certain period of time, creating an extended run long enough to shutdown software or 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 system solutions available:

  • 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.


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Description Price Model Power Rating Input Voltage VA Rating Output Voltage Mounting Type Backup Time Network Compatibility Current Rating Number of Outlets Type Length Width Depth
RS Stock No. 768-8824
Mfr. Part No.SEP 1000
BrandRiello
£436.54
Each
Units
Sentinal Pro 800W 220 V ac, 230 V ac, 240 V ac 1000VA - Stand Alone - - - 4 Line Interactive, Online 235mm 158mm 422mm
RS Stock No. 779-3803
Mfr. Part No.BR1500GI
BrandAPC
£394.97
Each
Units
Power-Saving Back-UPS Pro 865W 230V 1500VA 230V Stand Alone 4min - - 12 Line Interactive 112mm 301mm 380mm
RS Stock No. 670-0706
Mfr. Part No.UBC10.241
BrandPULS
£309.10
Each
Units
DIMENSION - 24 → 28V - 22.5V dc DIN Rail - - - - DC 124mm 123mm 119mm
RS Stock No. 768-8880
Mfr. Part No.SDH 3000 ER
BrandRiello
£1,055.70
Each
Units
Sentinel Dual 2.4kW 220 V ac, 230 V ac, 240 V ac 3000VA - Stand Alone - - - 9 Line Interactive, Online 87mm 450mm 625mm
RS Stock No. 739-7865
Mfr. Part No.2320225
£181.04
Each
Units
QUINT-UPS/ 24DC/ 24DC/10 - 24V dc - 24V dc DIN Rail - - - - - 130mm 35mm 125mm
RS Stock No. 779-3831
Mfr. Part No.BE325-UK
BrandAPC
£98.73
Each
Units
Back-UPS ES 185W 230V 325VA 230V Wall Mount 1min - - 4 Standby 360mm 115mm 95mm
RS Stock No. 768-8846
Mfr. Part No.SEP 3000ER
BrandRiello
£816.02
Each
Units
Sentinal Pro 2.4kW 220 V ac, 230 V ac, 240 V ac 3000VA - Stand Alone - - - 9 Line Interactive, Online 333mm 190mm 446mm
RS Stock No. 768-8761
Mfr. Part No.IDG 1600
BrandRiello
£200.28
Each
Units
iDialog Plus 960W 220 → 240V ac 1600VA 230V Stand Alone - - - 6 Offline 275mm 97mm 315mm
RS Stock No. 473-1045
Mfr. Part No.6EP1931-2DC21
BrandSiemens
£162.00
Each
Units
SITOP DC - 22 → 29V dc - 21.5 → 28.5V dc DIN Rail - - 6A - - 125mm 50mm 125mm
RS Stock No. 689-9086
Mfr. Part No.BE700G-UK
BrandAPC
£119.99
Each
Units
Power-Saving Back-UPS ES 405W 180 → 266V 700VA 230V Stand Alone - - 10A 8 Offline 89mm 244mm 311mm
RS Stock No. 869-4990
Mfr. Part No.NPW 600
BrandRiello
£80.17
Each
Units
Net Power 360W 220 → 240V ac 600VA 230V Desktop - - - 4 Line Interactive 142mm 100mm 287mm
RS Stock No. 869-5003
Mfr. Part No.NPW 2000
BrandRiello
£295.59
Each
Units
Net Power 1.2kW 220 → 240V ac 2000VA 230V Desktop - - - 6 Line Interactive 205mm 146mm 397mm
RS Stock No. 745-1880
Mfr. Part No.EL1200USBIEC
BrandEaton
£252.89
Each
Units
Eaton Ellipse ECO 750W 161 → 284V 1200VA 230V Rack Mount, Stand Alone - - - 8 Offline 305mm 81mm 312mm
RS Stock No. 768-8821
Mfr. Part No.SEP 700
BrandRiello
£393.74
Each
Units
Sentinal Pro 560W 220 V ac, 230 V ac, 240 V ac 700VA - Stand Alone - - - 4 Line Interactive, Online 235mm 158mm 422mm
RS Stock No. 823-9357
Mfr. Part No.ELP1600IEC
BrandEaton
£359.34
Each
Units
Eaton Ellipse PRO 1kW 165 → 285V 1600VA 230V Rack Mount, Tower 9min - 10A 8 Line Interactive 275mm 82mm 390mm
RS Stock No. 779-3825
Mfr. Part No.BK350EI
BrandAPC
£109.70
Each
Units
Back-UPS CS 210W 230V 350VA 230V Stand Alone 9min - 7A 6 Standby 91mm 165mm 284mm
RS Stock No. 869-5000
Mfr. Part No.NPW 1500
BrandRiello
£244.52
Each
Units
Net Power 900W 220 → 240V ac 1500VA 230V Desktop - - - 6 Line Interactive 205mm 146mm 397mm
RS Stock No. 712-7060
Mfr. Part No.EA-UPS Informer Guard LCD2 650 AP
£93.95
Each
Units
Guard LCD 2 390W 175 → 300V ac 650VA 230V Stand Alone 3.5min - - 2 Line Interactive 142mm 100mm 287mm
RS Stock No. 665-7851
Mfr. Part No.2866598
£166.51
Each
Units
MINI-DC-UPS/12DC/4 - 100 → 240V ac - 12V dc DIN Rail - - 4A - Buffer Module 202mm 135mm 110mm
RS Stock No. 714-0158
Mfr. Part No.TS650B
BrandOPTI
£79.66
Each
Units
Thunder Shield 360W 230V ac 650VA 230V Stand Alone 21min - - 2 Line Interactive 320mm 97mm 135mm