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. 761-7630
Mfr. Part No.2320254
£238.28
Each
Units
QUINT-UPS/ 24DC/ 24DC/ 5/1.3AH - 18 → 30V dc - 18 → 30V dc DIN Rail 5min - 9.3A 1 - 138mm 88mm 125mm
RS Stock No. 823-9382
Mfr. Part No.5P1150i
BrandEaton
£495.18
Each
Units
Eaton 5P 770W 160 → 294V 1150VA 230V Tower 12min - 10A 8 Line Interactive 230mm 150mm 345mm
RS Stock No. 869-5016
Mfr. Part No.VSD 1500
BrandRiello
£525.00
Each
Units
Vision Dual 1.35kW 220 → 240V ac 1500VA 220 → 240V ac Rack Mount - - - 8 Line Interactive 425mm 87mm 450mm
RS Stock No. 668-0532
Mfr. Part No.6EP1933-2EC51
BrandSiemens
£467.98
Each
Units
SITOP UPS500S 360W 22 → 29V dc - 24V dc DIN Rail - - 15.2A 1 Switch Mode 125mm 120mm 125mm
RS Stock No. 125-3922
Mfr. Part No.9PXEBM72RT3U
BrandEaton
£858.87
Each
Units
Eaton 9PX 2.2 kW, 3 kW - 2200 VA, 3000 VA 72V Rack Mount, Tower - - - - Online 130mm 440mm 485mm
RS Stock No. 823-9394
Mfr. Part No.5P650iR
BrandEaton
£359.44
Each
Units
Eaton 5P 420W 160 → 294V 650VA 230V Rack Mount 9min - 10A 8 Line Interactive 1U 438mm 364mm
RS Stock No. 721-2566
Mfr. Part No.BE700G-FR
BrandAPC
£109.99
Each
Units
Power-Saving Back-UPS ES 405W 230V 700VA 230V Stand Alone - - 10A 8 Offline 89mm 311mm 224mm
RS Stock No. 768-8871
Mfr. Part No.SDH 1500
BrandRiello
£727.57
Each
Units
Sentinel Dual 1.35kW 220 V ac, 230 V ac, 240 V ac 1500VA - Stand Alone - - - 8 Line Interactive, Online 87mm 450mm 425mm
RS Stock No. 779-3756
Mfr. Part No.SMX3000RMHV2UNC
BrandAPC
£2,249.16
Each
Units
Smart-UPS X 2.7kW 208 V, 230 V 3000VA 230V Rack Mount 6min - - 11 Line Interactive 432mm 85mm 667mm
RS Stock No. 823-8994
Mfr. Part No.DS3000IL
BrandOPTI
£662.45
Each
Units
Durable 2.7kW 176 → 288V ac 3000VA 220 → 240V ac Stand Alone 6min - - 4, 8 Online 336mm 190mm 426mm
RS Stock No. 823-9388
Mfr. Part No.5P850i
BrandEaton
£342.44
Each
Units
Eaton 5P 600W 160 → 294V 850VA 230V Tower 12min - 10A 8 Line Interactive 230mm 150mm 345mm
RS Stock No. 823-9350
Mfr. Part No.ELP650FR
BrandEaton
£161.41
Each
Units
Eaton Ellipse PRO 400W 165 → 285V 650VA 230V Rack Mount, Tower 9min - 10A 4 Line Interactive 260mm 82mm 285mm
RS Stock No. 779-3752
Mfr. Part No.SUM3000RMXLI2U
BrandAPC
£2,478.22
Each
Units
Smart-UPS XL Modular 2.85kW 230V 3000VA 230V Rack Mount 3min - - 10 Line Interactive 86mm 432mm 678mm
RS Stock No. 745-1874
Mfr. Part No.EL650IEC
BrandEaton
£120.76
Each
Units
Eaton Ellipse ECO 400W 161 → 284V 650VA 230V Rack Mount, Stand Alone - - - 4 Offline 263mm 81mm 235mm
RS Stock No. 473-1017
Mfr. Part No.6EP1931-2EC21
BrandSiemens
£196.00
Each
Units
SITOP DC - 22 → 29V dc - 21.5 → 28.5V dc DIN Rail - - 15A - - 125mm 50mm 125mm
RS Stock No. 823-9385
Mfr. Part No.5P650i
BrandEaton
£294.68
Each
Units
Eaton 5P 420W 160 → 294V 650VA 230V Tower 9min - 10A 8 Line Interactive 230mm 150mm 345mm
RS Stock No. 768-8758
Mfr. Part No.IPLUG 80
BrandRiello
£106.15
Each
Units
iPlug 480W 220 → 240V ac 800VA 230V Stand Alone - - - 8 Offline 99mm 175mm 213mm
RS Stock No. 768-8887
Mfr. Part No.SDH 3000
BrandRiello
£1,055.70
Each
Units
Sentinel Dual 2.7kW 220 V ac, 230 V ac, 240 V ac 3000VA - Stand Alone - - - 9 Line Interactive, Online 87mm 450mm 625mm
RS Stock No. 823-9360
Mfr. Part No.ELP650DIN
BrandEaton
£161.41
Each
Units
Eaton Ellipse PRO 400W 165 → 285V 650VA 230V Rack Mount, Tower 9min - 10A 4 Line Interactive 260mm 82mm 285mm
RS Stock No. 768-8830
Mfr. Part No.SEP 2200
BrandRiello
£713.30
Each
Units
Sentinal Pro 1.76kW 220 V ac, 230 V ac, 240 V ac 2200VA - Stand Alone - - - 8 Line Interactive, Online 333mm 190mm 446mm
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