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 computer in case of main power failure, electrical surge or unexpected power cut off. A UPS Power Supply is an ideal solution for an unstable main supply. These devices contain a battery that guarantees power to your computer system for a certain period of time. The UPS will switch on and act as a back up. The time period is long enough for saving the current task and shutting off the computer and can vary from a couple of minutes up to even 25-30 minutes. An Uninterruptible Power Supply is typically used to protect hardware such as servers, data centres, routers, and computers.




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. 712-7073
Mfr. Part No.EA-UPS Informer Guard LCD2 1500 AP
£188.17
Each
Units
Guard LCD 2 900W 175 → 300V ac 230V ac 1500VA 3.5min Stand Alone USB - 4 Line Interactive 205mm 146mm 397mm
RS Stock No. 712-7076
Mfr. Part No.EA-UPS Informer Guard LCD2 2000 AP
£221.16
Each
Units
Guard LCD 2 1.2kW 175 → 300V ac 230V ac 2000VA 3.5min Stand Alone USB - 4 Line Interactive 205mm 146mm 397mm
RS Stock No. 459-819
Mfr. Part No.IDG 800/RS
BrandRiello
£63.78
Each
Units
IDialog 480W 220 → 240V ac 230V ac 800VA - Stand Alone USB - 4 Line Interactive, Offline 192mm 90mm 232mm
RS Stock No. 689-9073
Mfr. Part No.BK650EI
BrandAPC
£136.90
Each
Units
Back-UPS CS 400W 180 → 266V 230V 650VA - Stand Alone RJ45, Serial Port, USB 7A 6 Offline 165mm 91mm 284mm
RS Stock No. 869-4993
Mfr. Part No.NPW 800
BrandRiello
£79.44
Each
Units
Net Power 480W 220 → 240V ac 230V ac 800VA - Desktop USB - 4 Line Interactive 142mm 100mm 287mm
RS Stock No. 715-8825
Mfr. Part No.SMT3000I
BrandAPC
£1,271.21
Each
Units
Smart-UPS SMT 2.7kW 160 → 285V 230V 3000VA 6min Stand Alone RJ45, Smart Slot, USB - 9 Line Interactive 435mm 197mm 544mm
RS Stock No. 689-9070
Mfr. Part No.BK500EI
BrandAPC
£117.33
Each
Units
Back-UPS CS 300W 180 → 266V 230V 500VA - Stand Alone RJ45, USB 7A 6 Offline 165mm 91mm 284mm
RS Stock No. 459-815
Mfr. Part No.IDG 600/RS
BrandRiello
£52.79
Each
Units
IDialog 360W 220 → 240V ac 230V ac 600VA - Stand Alone USB - 4 Line Interactive, Offline 192mm 90mm 232mm
RS Stock No. 779-3816
Mfr. Part No.BR900GI
BrandAPC
£215.12
Each
Units
Power-Saving Back-UPS Pro 540W 230V 230V 900VA 5min Stand Alone DB9, RS232, USB 8A 10 Line Interactive 100mm 250mm 382mm
RS Stock No. 714-0161
Mfr. Part No.TS1000B
BrandOPTI
£84.79
Each
Units
Thunder Shield 480W 230V ac 230V ac 800VA 33min Stand Alone Serial Port - 2 Line Interactive 320mm 97mm 135mm
RS Stock No. 739-7869
Mfr. Part No.2320238
£202.60
Each
Units
- - 24V dc 24V dc - - DIN Rail - - - - 130mm 40mm 125mm
RS Stock No. 779-3838
Mfr. Part No.BE400-UK
BrandAPC
£88.00
Each
Units
Back-UPS ES 240W 230V 230V 400VA 5min Wall Mount - - 8 Standby 230mm 86mm 285mm
RS Stock No. 715-8812
Mfr. Part No.SMT1500I
BrandAPC
£575.94
Each
Units
Smart-UPS SMT 980W 160 → 285V 230V 1500VA 7min Stand Alone RJ45, Smart Slot, USB - 8 Line Interactive 219mm 171mm 439mm
RS Stock No. 498-7175
Mfr. Part No.IPG 600 UK/RS
BrandRiello
£69.68
Each
Units
IPlug 360W 220 → 240V ac 230V ac 600VA - - USB - 8 - 99mm 175mm 313mm
RS Stock No. 665-7918
Mfr. Part No.2866239
£243.12
Each
Units
QUINT - 24V dc 24V dc - - DIN Rail - 22A - UPS 130mm 66mm 125mm
RS Stock No. 869-4997
Mfr. Part No.NPW 1000
BrandRiello
£156.06
Each
Units
Net Power 600W 220 → 240V ac 230V ac 1000VA - Desktop RS232, USB - 4 Line Interactive 160mm 146mm 350mm
RS Stock No. 715-8800
Mfr. Part No.SMT750I
BrandAPC
£293.34
Each
Units
Smart-UPS SMT 500W 160 → 285V 230V 750VA 5min Stand Alone RJ45, Smart Slot, USB - 6 Line Interactive 161mm 138mm 363mm
RS Stock No. 768-8767
Mfr. Part No.IDG 1200
BrandRiello
£131.36
Each
Units
IDialog Plus 720W 220 → 240V ac 230V ac 1200VA - Stand Alone Serial Port, USB - 6 Offline 275mm 97mm 315mm
RS Stock No. 715-8819
Mfr. Part No.SMT1000I
BrandAPC
£419.49
Each
Units
Smart-UPS SMT 670W 160 → 285V 230V 1000VA 6min Stand Alone RJ45, Smart Slot, USB - 8 Line Interactive 219mm 171mm 439mm
RS Stock No. 665-7854
Mfr. Part No.2866640
£151.72
Each
Units
Mini DC - 85 → 264 V ac, 100 → 350 V dc 24V dc - - DIN Rail - 2A - Buffer Module 99mm 67.5mm 107mm
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