Eaton Ellipse PRO 1200
Power cut? The Eaton Ellipse PRO 1200 switches your NAS or home server to battery in milliseconds, for a clean shutdown with zero data loss.
Buy at AmazonAs an Amazon Associate I earn from qualifying purchases.
Characteristics
- Power: 1200 VA / 750 W
- Outlets: 8x IEC C13 (4 battery-backed + 4 surge-only)
- Runtime: ≈15 to 20 min at moderate load
- Display: LCD + USB monitoring software
- Near-instant battery switchover, automatic clean NAS shutdown
Detailed overview: Eaton Ellipse PRO 1200 UPS
The Eaton Ellipse PRO 1200 is a backup UPS built to protect a fixed piece of electronics, not to replace a solar inverter or a van's 12V to 230V converter: it constantly monitors mains power and switches to battery the instant it detects an outage or a voltage sag. For a home fitted with residential solar, that is exactly what belongs between the wall socket and a NAS, a home server, a router or a Starlink dish: a few seconds of dropout is sometimes enough to corrupt a NAS mid write, or knock a router offline at the worst possible moment.
With 1200 VA and 750 W of continuous power, the Ellipse PRO 1200 aims higher than a basic backup plug: its 8 IEC C13 outlets (4 battery-backed plus surge protection, 4 surge-protection-only) let you dedicate the most important sockets to the NAS, network switch and router, and leave the rest on surge protection only. Automatic voltage regulation (AVR) corrects sags and surges on the mains line without even touching the battery, which preserves both its runtime and its lifespan.
The LCD screen shows load, remaining runtime and battery health in real time, and the battery itself is user-replaceable without tools after a few years of use. The USB port and Eaton's monitoring software let you schedule an automatic, clean shutdown of the NAS or server if an outage runs longer than the available runtime (around 15 to 20 minutes at moderate load), avoiding any data corruption. The EcoControl function automatically cuts power to secondary peripherals once the master device switches off, trimming standby consumption.
The one genuine downside reported by users is the cooling fan, audible in normal use and noticeably louder during a power cut, which can be distracting in an occupied home office but is a non-issue in a utility room, cupboard or plant room, where a NAS usually lives anyway.
EAN: 0743172437952
Comparison
When choosing a UPS to protect a NAS or home server, the Eaton Ellipse PRO 1200 is often compared to other models in the same power class, in searches like "Eaton Ellipse PRO 1200 vs APC Back-UPS" or "Eaton vs CyberPower". Here is how it stacks up against three frequently cited alternatives: the APC Back-UPS BE850G2, cheaper but less powerful; the APC Back-UPS BX500MI, an entry-level pick for a tight budget; and the CyberPower CP1500EPFCLCD-UK, the most demanding choice thanks to its pure sine wave output.
| Criterion | Eaton Ellipse PRO 1200 | APC Back-UPS BE850G2 | APC Back-UPS BX500MI | CyberPower CP1500EPFCLCD-UK |
|---|---|---|---|---|
| Power | 1200 VA / 750 W | 850 VA / 520 W | 500 VA / 300 W | 1500 VA / 900 W |
| Output wave on battery | Simulated sine wave | Simulated sine wave | Simulated sine wave | Pure sine wave |
| Outlets | 8x IEC C13 (4 battery-backed + 4 surge-only) | 8 outlets (6 battery-backed + 2 surge-only), 2 USB | 3x IEC C13 | 6x UK/IEC, all battery-backed |
| Display / monitoring | LCD + USB software | LED indicators | LED indicators | LCD + USB software |
| Observed price | £304.08 | ≈ £125 | £60.55 | ≈ £297 |
Overall, the Eaton Ellipse PRO 1200 stands out as the best balance of power and budget for protecting a NAS or small home server: clearly more powerful than either APC model, with an LCD screen and proper monitoring software the BX500MI simply does not offer. The CyberPower CP1500EPFCLCD-UK only pulls ahead on one technical point, pure sine wave output, which mainly matters for setups with active PFC power supplies, at a similar price for just 300 VA more.
Related video
Video: Eaton Ellipse Pro 1200 : fan noise - Published on 13/11/2022
Our tester's review: Dawid Lojewski
We set up the Ellipse PRO 1200 under our NAS rack, replacing a basic extension lead. First impression: the LCD screen is genuinely handy, showing load and remaining runtime in real time instead of leaving you guessing. During a deliberate power cut test (breaker switched off under load), the switch to battery was instant, without so much as a blink on the NAS side. The USB monitoring software correctly triggered a clean NAS shutdown a few minutes into the outage, exactly as intended. One honest downside: the cooling fan is clearly audible whenever the unit is under load, and noticeably louder right after a power cut, which can be distracting in a quiet home office. Tucked away in a utility room or cupboard with the NAS, it is simply not an issue. Overall, a solid, no-nonsense UPS, best kept in a room where fan noise will not bother anyone.
Frequently asked questions: Eaton Ellipse PRO 1200 UPS
A solar inverter converts DC power from panels into AC for the home, while a UPS like the Ellipse PRO 1200 protects a fixed device (NAS, server, router) from mains outages by switching to battery for a few minutes. The two are complementary, not competing products.
Eaton rates roughly 15 to 20 minutes of runtime at 85% load, which is plenty of time for the USB monitoring software to trigger a clean NAS shutdown before the battery runs out.
On mains power, fan noise stays discreet, but several users report it spinning up noticeably during a power cut or under heavy load. Best kept in a utility room if silence matters.
Yes, the battery is user-replaceable without tools, typically after 3 to 5 years depending on use. Eaton sells compatible replacement battery packs.
The 8 outlets split into 4 battery-backed plus surge protection (reserve these for the NAS, router and switch) and 4 surge-protection-only outlets for less critical devices like a monitor or printer.
Other products in the "UPS backup power" category
APC Back-UPS 500VA
See price (7)
Mains dropout or surge at the campsite? This compact APC UPS keeps a router, a Starlink dish or a NAS protected in a van, on a boat or at home.
APC Back-UPS 850VA
See price (19)
Power cut hitting your home solar setup? The APC Back-UPS 850VA keeps a NAS or home server running just long enough for a clean, safe shutdown.
APC Back-UPS Pro 650VA
See price (3)
Protecting a NAS wired to your solar setup or a Starlink dish on the road? The APC BR650MI adds an LCD screen and 1 Gbit/s network protection.
CyberPower CP1500EPFCLCD-UK
See price
Got a NAS with an active PFC power supply? The CyberPower CP1500EPFCLCD-UK delivers a true pure sine wave on battery, where a standard UPS can struggle to match it.
Published on 04/09/2026