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庫存編號 188-0191
製造零件編號SMT3000IC
BrandAPC
HK$14,527.43
單位
Smart-UPS SMT 2.7kW 3000VA 230V 160 → 286V Tower - - 1 Line Interactive - 197mm 54.4mm 435mm
RS庫存編號 779-3825
製造零件編號BK350EI
BrandAPC
HK$1,349.59
單位
Back-UPS CS 210W 350VA 230V 230V Stand Alone 9min - 6 Standby 7A 91mm 165mm 284mm
RS庫存編號 768-8874
製造零件編號SDH 2200
BrandRiello
HK$10,404.99
單位
Sentinel Dual 1.98kW 2200VA - 220 V ac, 230 V ac, 240 V ac Stand Alone - - 9 Line Interactive, Online - 87mm 450mm 625mm
RS庫存編號 624-7479
製造零件編號6EP1931-2EC42
BrandSiemens
HK$2,419.06
單位
SITOP DC - - 21.5 → 28.5V dc 22 → 29V dc DIN Rail - - - - 15A 125mm 50mm 125mm
RS庫存編號 125-3910
製造零件編號9PX2200IRT2U
BrandEaton
HK$18,550.03
單位
Eaton 9PX 2.2kW 2200VA 240V 100 → 276 (With Derating) V, 176 → 276 (Without Derating) V Rack Mount, Tower 5 min @ 1800 W - 2 (IEC C19), 8 (IEC C13) Online 16A 86.5mm 440mm 605mm
全新
RS庫存編號 206-4742
製造零件編號9SXEBM36R
BrandEaton
HK$5,718.63
單位
Eaton 9SX 900W 1000VA 230V 190 → 276V - - - - - 10A - - -
RS庫存編號 125-3921
製造零件編號9PXEBM72RT2U
BrandEaton
HK$10,512.60
單位
Eaton 9PX 2.2 kW, 3 kW 2200 VA, 3000 VA 72V - Rack Mount, Tower - - - Online - 86.5mm 440mm 605mm
全新
RS庫存編號 206-4741
製造零件編號9SXEBM240T
BrandEaton
HK$19,094.39
單位
Eaton 9SX 4.5kW 5000VA 230V 190 → 276V - - - - - 16A - - -
RS庫存編號 823-9372
製造零件編號ELP1200DIN
BrandEaton
HK$3,485.40
單位
Eaton Ellipse PRO 750W 1200VA 230V 165 → 285V Rack Mount, Tower 9min - 8 Line Interactive 10A 275mm 82mm 390mm
RS庫存編號 125-3916
製造零件編號9PX3000IRT2U
BrandEaton
HK$25,119.83
單位
Eaton 9PX 3kW 3000VA 240V 100 → 276 (With Derating) V, 176 → 276 (Without Derating) V Rack Mount, Tower 4 min @ 2500 W - 2 (IEC C19), 8 (IEC C13) Online 16A 86.5mm 440mm 605mm
RS庫存編號 624-7457
製造零件編號6EP1931-2FC42
BrandSiemens
HK$3,986.78
單位
SITOP DC 960W - 24V dc 22 → 29V dc DIN Rail - - - - 42.6A 125mm 102mm 125mm
RS庫存編號 125-3909
製造零件編號9PX2200IRT3U
BrandEaton
HK$15,658.77
單位
Eaton 9PX 2.2kW 2200VA 240V 100 → 276 (With Derating) V, 176 → 276 (Without Derating) V Rack Mount, Tower 5 min @ 1800 W - 2 (IEC C19), 8 (IEC C13) Online 16A 130mm 440mm 485mm
RS庫存編號 201-9770
製造零件編號9PX1500IRT2U
BrandEaton
HK$15,791.54
單位
Eaton 9PX 1.5kW 1500VA 230V ac 176 → 276V ac Rack Mount, Tower - - 8 (IEC C13) Online - 86.5mm 440mm 450mm
RS庫存編號 801-6400
製造零件編號2320270
HK$9,927.68
單位
- - - - 230V ac DIN Rail Mount - - - Switch Mode - - 125mm 125mm
RS庫存編號 473-1017
製造零件編號6EP1931-2EC21
BrandSiemens
HK$2,166.32
單位
SITOP DC - - 21.5 → 28.5V dc 22 → 29V dc DIN Rail - - - - 15A 125mm 50mm 125mm
RS庫存編號 201-9758
製造零件編號9SX3000IR
BrandEaton
HK$21,298.65
單位
Eaton 9SX 2.7kW 3000VA 230V ac 190 → 276V ac - - - - - - - - -
RS庫存編號 201-9772
製造零件編號9PX1000IRT2U
BrandEaton
HK$11,462.17
單位
Eaton 9PX 1kW 1000VA 230V ac 176 → 276V ac - - - - - - - - -
RS庫存編號 180-5490
製造零件編號2907161
HK$3,681.05
單位
TRIO-UPS-2G/1AC/24DC/10 - - 24V dc 100 → 240V ac DIN Rail - - - UPS - 68mm 160mm 130mm
RS庫存編號 146-8167
製造零件編號AR3104
BrandAPC
HK$16,569.26
單位
NetShelter - - - - Rack Mount - - - - - 600mm 1.07m 1.199m
RS庫存編號 823-9344
製造零件編號ELP850IEC
BrandEaton
HK$2,759.27
單位
Eaton Ellipse PRO 510W 850VA 230V 165 → 285V Rack Mount, Tower 9min - 4 Line Interactive 10A 260mm 82mm 285mm