Tired of losing work when the power flickers? The Eaton 3S850B 850VA 510W Standby Offline UPS Tower 230V keeps your computer, router, and small office gear running when the grid drops. It gives you a few minutes of clean power so you can save files and shut down safely. Without a UPS you risk data loss, hardware damage, and missed deadlines. This unit is built for home offices and small businesses that cannot afford unexpected shutdowns.
Eaton 3S850B 850VA 510W Standby Offline UPS Tower 230V
Power cuts and voltage spikes can stop your work in an instant. When a surge hits, it can fry a hard drive or corrupt a file. The Eaton 3S850B UPS solves this by giving you instant battery backup and built-in surge protection. It switches to battery in less than a millisecond, so your devices never see the outage. The unit also regulates voltage, keeping it steady at 230 V. This means your computer, router, and other electronics stay safe and operational, even when the grid is unstable.
Benefits
- Keeps your computer on long enough to save work and close programs.
- Protects sensitive electronics from voltage spikes and surges.
- Provides quiet operation with only 25 dB noise, so it does not disturb you.
- Offers eight AC outlets, so you can plug several devices at once.
- Shows clear LED status, letting you see battery health and load at a glance.
Usages
Use the UPS in a home office to protect a desktop PC, monitor, and internet router. Small businesses can connect point-of-sale terminals, small servers, and networking switches. It is also ideal for a home entertainment setup, keeping a TV and sound system running during brief outages. The unit works well in a workshop where power tools need stable voltage for control panels. Anywhere you need reliable power for up to 510 W, this tower fits the job.
Key Features
- 850 VA (0.85 kVA) capacity delivering 510 W continuous power.
- Standby (offline) topology for fast transfer time.
- 9 Ah sealed lead-acid battery with automatic test and cold-start.
- Two USB 2.0 ports for monitoring and firmware updates.
- Input voltage 184-264 V, output 220-230 V, supports 50/60 Hz.
- Built-in surge protection, noise level only 25 dB.
- 98 % efficiency, reducing energy waste.
- Eight AC outlets for easy device connection.
- LED indicators for power, battery, and overload status.
- Compact tower design, 170 mm high, 335 mm wide, 85 mm deep, 4.3 kg weight.
Specifications
| Features |
| Power protection features |
Overdischarge |
| Surge protection |
Yes |
| Noise level |
25 dB |
| Efficiency |
98% |
| Number of output phases |
1 |
| Number of input phases |
1 |
| Output frequency |
50/60 Hz |
| Output operation voltage (max) |
230 V |
| Output operation voltage (min) |
220 V |
| Input frequency |
46/70 Hz |
| Input operation voltage (max) |
264 V |
| Input operation voltage (min) |
184 V |
| Output power |
510 W |
| Output power capacity |
0.85 kVA |
| UPS topology |
Standby (Offline) |
| Ports & interfaces |
| USB 2.0 ports quantity |
2 |
| USB port |
Yes |
| AC outlets quantity |
8 AC outlet(s) |
| Battery |
| Battery capacity |
9 Ah |
| Cold start |
Yes |
| Automatic battery test |
Yes |
| Hot-swap battery |
No |
| Battery voltage |
12 V |
| Battery capacity |
9 Ah |
| Battery capacity |
9 Ah |
| Battery technology |
Sealed Lead Acid (VRLA) |
| Design |
| LED indicators |
Yes |
| Cable length |
1.5 m |
| Product colour |
Black, White |
| Form factor |
Tower |
| Operational conditions |
| Operating altitude |
0 - 2000 m |
| Operating relative humidity (H-H) |
0 - 85% |
| Certificates |
| Certification |
IEC/EN 62040-1, EAC, IEC/EN 62040-2, IEC/EN 62040-2 CE |
| Compliance certificates |
CE, EAC |
| Packaging content |
| Cables included |
USB cable |
| Rack mount kit |
No |
| Safety regulation & standards |
| Safety |
IEC/EN 62040-1, IEC/EN 62040-2 |
| Sustainability |
| Sustainability certificates |
CE, EAC |
| Weight & dimensions |
| Weight |
4.3 kg |
| Height |
170 mm |
| Depth |
85 mm |
| Width |
335 mm |
