Power cuts and voltage spikes can shut down your computer, router, or home office equipment in an instant. When a device loses power, you can lose unsaved work, interrupt video calls, or even damage sensitive electronics. The Eaton 3P900UI 900VA 540W Standby Offline UPS Tower protects against these problems by providing clean backup power and surge protection, keeping your gear running long enough to save your work and shut down safely.
Eaton 3P900UI 900VA 540W Standby Offline UPS Tower with Eaton
Imagine finishing a report and the lights flicker, then everything goes dark. The Eaton 3P900UI is a compact standby UPS that steps in the moment the mains fail, giving you up to 540 W of clean power. It is built for home offices, small servers, and any device that cannot afford an abrupt shutdown.
Usages
The unit fits on a desk or on a shelf in a home office. Connect your PC, monitor, router, and a small printer to the four C3 outlets and you have a protected workstation. Small business owners can link a point-of-sale terminal or a network switch to keep sales running during an outage. It also works well with home entertainment gear such as a set-top box or gaming console, giving you time to save progress before the power returns. Remote workers can rely on it to keep video calls stable when the grid wavers.
Benefits
- Provides up to 540 W of backup power, enough for a PC, monitor and router.
- Surge protection stops voltage spikes from damaging your electronics.
- Auto shut-off saves battery life when the load is too low.
- Quiet operation at 25 dB lets you work without annoying noise.
- LED display shows battery status so you always know how much runtime remains.
Key Features
- 900 VA (0.9 kVA) capacity for small office equipment.
- Standby (offline) topology switches instantly to battery on power loss.
- 4 C3 AC outlets with LED indicators.
- Two USB ports (Type-A and Type-C) for battery monitoring.
- One Ethernet LAN port for network management.
- 9 Ah, 12 V sealed lead-acid battery for reliable backup.
- 97 % efficiency in ECO mode reduces electricity cost.
- 25 dB noise level keeps the workspace quiet.
- Compact tower design, only 81 mm wide, fits tight spaces.
- Built-in auto shut-off and surge protection meet IEC safety standards.
Specifications
| Features |
| Auto shut-off |
Yes |
| Surge protection |
Yes |
| Noise level |
25 dB |
| Output power factor |
0.6 |
| Efficiency (ECO mode) |
97% |
| Efficiency |
97% |
| Number of output phases |
1 |
| Number of input phases |
1 |
| Power consumption (average operating) |
16.7 W |
| Output frequency |
50/60 Hz |
| Output operation voltage (max) |
284 V |
| Output operation voltage (min) |
161 V |
| Input frequency |
46/70 Hz |
| Input operation voltage (max) |
284 V |
| Input operation voltage (min) |
161 V |
| Waveform |
Stepwise |
| Output power |
540 W |
| Output power capacity |
0.9 kVA |
| UPS topology |
Standby (Offline) |
| Ports & interfaces |
| Ethernet LAN (RJ-45) ports |
1 |
| USB 2.0 ports quantity |
2 |
| USB port type |
USB Type A/USB Type-C |
| USB port |
Yes |
| AC outlets quantity |
4 AC outlet(s) |
| AC outlet types |
C3 coupler |
| Battery |
| Battery capacity |
9 Ah |
| Battery voltage |
12 V |
| Battery capacity |
9 Ah |
| Battery capacity |
9 Ah |
| Design |
| Display type |
LED |
| Product colour |
Black |
| Form factor |
Tower |
| Operational conditions |
| Operating temperature (T-T) |
0 - 40 °C |
| Certificates |
| Certification |
IEC/EN 62040-1 IEC/EN 62040-2 IEC/EN 62040-3 CE UKCA Ukr Cm |
| Compliance certificates |
CB, CE, RoHS, WEEE |
| Waste Electrical and Electronic Equipment (WEEE) compliance |
Yes |
| Packaging content |
| Quick installation guide |
Yes |
| Cables included |
USB cable |
| Weight & dimensions |
| Weight |
3.9 kg |
| Height |
263 mm |
| Depth |
235 mm |
| Width |
81 mm |
| Packaging data |
| Package type |
Box |
| Other features |
| Nominal input voltage |
220-240 V |
| Operating temperature (T-T) |
0 - 40 °C |
| Relative humidity |
0 - 95% |
| Input connection type |
C14 |
