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 Number of Outlets Type Current Rating Length Width Depth
RS Stock No. 665-7857
Mfr. Part No.2866611
HK$2,014.27
Each
units
TRIO-UPS/1AC/24DC/ 5 - - 24V dc 85 → 264 V ac, 100 → 350 V dc DIN Rail - - Buffer Module 5A 130mm 60mm 118mm
RS Stock No. 869-5000
Mfr. Part No.NPW 1500
BrandRiello
HK$2,513.61
Each
units
Net Power 900W 1500VA 230V 220 → 240V ac Desktop - 6 Line Interactive - 205mm 146mm 397mm
RS Stock No. 823-9388
Mfr. Part No.5P850i
BrandEaton
HK$3,604.23
Each
units
5P 600W 850VA 230V 160 → 294V Tower 12min 8 Line Interactive 10A 230mm 150mm 345mm
RS Stock No. 768-8828
Mfr. Part No.SEP 1000ER
BrandRiello
HK$5,885.69
Each
units
Sentinal Pro 800W 1000VA - 220 V ac, 230 V ac, 240 V ac Stand Alone - 4 Line Interactive, Online - 235mm 158mm 422mm
RS Stock No. 473-1045
Mfr. Part No.6EP1931-2DC21
BrandSiemens
HK$1,566.42
Each
units
SITOP DC - - 21.5 → 28.5V dc 22 → 29V dc DIN Rail - - - 6A 125mm 50mm 125mm
RS Stock No. 761-7649
Mfr. Part No.2320267
HK$2,690.00
Each
units
QUINT-UPS/ 24DC/ 24DC/10/3.4AH - - 18 → 30V dc 18 → 30V dc DIN Rail 10min 1 - 18.6A 169mm 120mm 125mm
RS Stock No. 498-7175
Mfr. Part No.IPG 600 UK/RS
BrandRiello
HK$863.64
Each
units
IPlug 360W 600VA 230V 220 → 240V ac Stand Alone - 8 - - 99mm 175mm 313mm
RS Stock No. 768-8887
Mfr. Part No.SDH 3000
BrandRiello
HK$13,940.25
Each
units
Sentinel Dual 2.7kW 3000VA - 220 V ac, 230 V ac, 240 V ac Stand Alone - 9 Line Interactive, Online - 87mm 450mm 625mm
RS Stock No. 779-3759
Mfr. Part No.SUA5000RMI5U
BrandAPC
HK$32,983.70
Each
units
Smart-UPS 4kW 5000VA 230V 230V Rack Mount 9min 14 Line Interactive - 483mm 222mm 660mm
RS Stock No. 505-5421
Mfr. Part No.2866213
HK$2,746.01
Each
units
QUINT-BUFFER/24DC/20 - - 24V dc 24V dc DIN Rail - - DC 20.6A 130mm 64mm 125mm
RS Stock No. 761-7630
Mfr. Part No.2320254
HK$2,450.00
Each
units
QUINT-UPS/ 24DC/ 24DC/ 5/1.3AH - - 18 → 30V dc 18 → 30V dc DIN Rail 5min 1 - 9.3A 138mm 88mm 125mm
RS Stock No. 459-819
Mfr. Part No.IDG 800/RS
BrandRiello
HK$763.12
Each
units
IDialog 480W 800VA 230V 220 → 240V ac Stand Alone - 4 Line Interactive, Offline - 192mm 90mm 232mm
RS Stock No. 768-8846
Mfr. Part No.SEP 3000ER
BrandRiello
HK$11,086.17
Each
units
Sentinal Pro 2.4kW 3000VA - 220 V ac, 230 V ac, 240 V ac Stand Alone - 9 Line Interactive, Online - 333mm 190mm 446mm
RS Stock No. 823-8988
Mfr. Part No.DS2000I
BrandOPTI
HK$6,532.53
Each
units
Durable 1.8kW 2000VA 220 → 240V ac 176 → 288V ac Stand Alone 6min 4, 8 Online - 336mm 190mm 374mm
RS Stock No. 665-7851
Mfr. Part No.2866598
HK$4,139.94
Each
units
MINI-DC-UPS/12DC/4 - - 12V dc 100 → 240V ac DIN Rail - - Buffer Module 4A 202mm 135mm 110mm
RS Stock No. 869-5016
Mfr. Part No.VSD 1500
BrandRiello
HK$5,548.22
Each
units
Vision Dual 1.35kW 1500VA 220 → 240V ac 220 → 240V ac Rack Mount - 8 Line Interactive - 425mm 87mm 450mm
RS Stock No. 665-7918
Mfr. Part No.2866239
HK$2,214.70
Each
units
QUINT-DC-UPS/24DC/20 - - 24V dc 24V dc DIN Rail - - UPS 22A 130mm 66mm 125mm
RS Stock No. 768-8837
Mfr. Part No.SEP 1500
BrandRiello
HK$7,166.80
Each
units
Sentinal Pro 1.2kW 1500VA - 220 V ac, 230 V ac, 240 V ac Stand Alone - 4 Line Interactive, Online - 235mm 158mm 422mm
RS Stock No. 751-2601
Mfr. Part No.2320335
HK$4,640.00
Each
units
UPS-BAT/VRLA/24DC/38AH - - - 24V dc - - - - 50A 210mm 330mm 197mm
RS Stock No. 708-0261
Mfr. Part No.GXT2-2000RT230 CLP
BrandEagle
HK$85,383.40
Each
units
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