UPS battery backupsENERGY STAR certified
Eaton S3M30K
30 kVA / 30 kW double conversion UPS.
Capacity
30 kVA
30 kW real power
Topology
Double Conversion
Efficiency
96.2%
weighted, as tested
Runtime @ 50%
-
not reported by the maker
A UPS has two ratings and the lower one is the limit. This unit is rated 30 kVA and 30 kW, so the equipment plugged into its battery outlets should draw no more than about 24 kW if you want the usual 20% headroom. How to size a UPS.
Its weighted efficiency of 96.2% compares with a median of 95.2% across 17 certified units within 25% of its capacity.
- Maker
- Eaton
- Model
- S3M30K
- Apparent power rating
- 30 kVA
- Real power rating
- 30 kW
- Power factor
- 1.00
- Topology
- Double Conversion
- Intended use
- Consumer, Commercial, Data Center
- Weighted efficiency
- 96.2%
- Efficiency at 25 / 50 / 75 / 100% load
- 97.0% / 96.3% / 95.4% / 94.2%
- Rack mountable
- No
- Rated input voltage
- 208-220 V
- Rated output voltage
- 208-220 V
- Connections
- Serial Port,Other,Ethernet,USB Port
- Size (H x W x D)
- 1000 x 300 x 800 mm
- Maker take-back program
- No
- On the market since
- Jun 2021
- ENERGY STAR certified
- 27 Jan 2026
Source: ENERGY STAR certified uninterruptible power supplies dataset, US EPA, record 4577045, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the S3M30K
Certified UPS units from other makers within 25% of its VA rating.
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| Liebert EXS F3 series | 30 kVA / 30 kW | Multi-Mode Double Conversion | 94.8% | 45 min |
| Vertiv Liebert EXS F3 series | 30 kVA / 30 kW | Multi-Mode Double Conversion | 94.8% | 45 min |
| Liebert 51SA030QAA | 30 kVA / 30 kW | Multi-Mode Double Conversion | 96.3% | 10 min |
| Vertiv 51SA030QAA | 30 kVA / 30 kW | Multi-Mode Double Conversion | 96.3% | 10 min |
| Liebert 51SA030QBA | 30 kVA / 30 kW | Multi-Mode Double Conversion | 95.2% | 10 min |
| Vertiv 51SA030QBA | 30 kVA / 30 kW | Multi-Mode Double Conversion | 95.2% | 10 min |
Eaton
More Eaton UPS battery backups
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| 5P1000RT2UG2-L | 1,000 VA / 920 W | Line Interactive | 98.6% | 18 min |
| 5P1150IRT2UG2-L | 1,150 VA / 920 W | Line Interactive | 98.5% | 18 min |
| 5P1550IRT2UG2-L | 1,550 VA / 1,350 W | Line Interactive | 98.9% | 12 min |
| 5P1550RT2UG2-L | 1,440 VA / 1,350 W | Line Interactive | 98.7% | 12 min |
| 5P550RG2-L | 550 VA / 495 W | Line Interactive | 98.5% | 18 min |
| 5P650IRG2-L | 650 VA / 520 W | Line Interactive | 98.4% | 16 min |
| 5PX1000IRT2UG2 | 1,000 VA / 1,000 W | Line Interactive | 98.5% | 17 min |
| 5PX1000RTG2 | 1,000 VA / 1,000 W | Line Interactive | 98.5% | 16 min |