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Off-Line UPS

Less expensive, off-line UPS are usually considered less sophisticated than other UPS products. During normal operation the power will flow straight through the unit, and if the input voltage fails or fluctuates outside pre-set tolerances the UPS will then feed battery power via an inverter. When the mains power returns, the inverter is turned off and the output is switched back to mains. Typically there will be a break of between 4 and 10 milliseconds during transfer to and from the battery mode.

For a guide to the different UPS technologies and more information on the right system to choose please visit the UPS Technologies page on our main website by clicking here
Eaton Pulsar Ellipse ASR Eaton Pulsar Ellipse ASR
This unit provides a battery back up supply plus effective protection against damaging surges. The Ellipse ASR (Advanced Surge Reduction) units include a high performance surge protective device which offer complete protection for telephone, broadband and Ethernet devices.
Emerson PSPEmerson PSP
This model in either 500 or 650 VA size is a full featured UPS that delivers cost-effective power protection in a compact package. Features include battery-backed outlets and a surge protection only outlet offering 4 minutes of back-up power at full load. Shutdown software and a USB cable are also included.
APC UPS - Back-UPS CSAPC UPS - Back-UPS CS
This unit safeguards equipment from damaging surges and spikes that travel along utility, phone and network lines. Shutdown software automatically powers down IT systems in the event of an extended power outage. Additional features including audible alarms, LED status indicators, user replaceable battery, push-button circuit breakers and plentiful outlets (including transformer-block spaced outlets) make this UPS very easy to use.
Riello iPlugRiello iPlug
This unit is the ideal solution for household and small home office systems. It's compact size and versatility with push-button operation, LED status panel and user-replaceable batteries makes it easy to install within a domestic environment. Supplied with monitoring and control software for an orderly unattended shutdown of IT systems.
Eaton Eaton Ellipse ASR Eaton Eaton Ellipse ASR
This unit provides a battery back up supply plus effective protection against damaging surges. The Ellipse ASR (Advanced Surge Reduction) units include a high performance surge protective device which offer complete protection for telephone, broadband and Ethernet devices.