Vertiv UPS, ENERGY STAR certified
Vertiv 51SA250NAA
250 kVA / 250 kW multi-mode double conversion UPS.
Capacity
250 kVA
250 kW real power
Topology
Multi-Mode Double Conversion
Efficiency
96.6%
weighted, as tested
Runtime @ 50%
10 min
5 min at full load
A UPS has two ratings and the lower one is the limit. This unit is rated 250 kVA and 250 kW, so the equipment plugged into its battery outlets should draw no more than about 200 kW if you want the usual 20% headroom. How to size a UPS.
Its weighted efficiency of 96.6% compares with a median of 96.9% across 17 certified units within 25% of its capacity. With nothing plugged in it still draws 1,488.8 W, about $1,695 a year at 13¢/kWh just to stand ready.
- Maker
- Vertiv
- Model
- 51SA250NAA
- Apparent power rating
- 250 kVA
- Real power rating
- 250 kW
- Power factor
- 1.00
- Topology
- Multi-Mode Double Conversion
- Intended use
- Consumer, Commercial, Data Center
- Battery
- Valve Regulated Lead-acid Battery
- Runtime at 50% load
- 10 min
- Runtime at 100% load
- 5 min
- Battery warranty
- 3 yr
- Weighted efficiency
- 96.6%
- Efficiency at 25 / 50 / 75 / 100% load
- 96.2% / 96.7% / 96.6% / 96.2%
- Input power at no load
- 1,488.8 W
- Rack mountable
- No
- Modular
- Yes
- Rated input voltage
- 480 V
- Rated output voltage
- 480 V
- Connections
- Serial Port,Other,USB Port,Ethernet
- Size (H x W x D)
- 2000 x 848 x 994 mm
- Maker take-back program
- No
- On the market since
- Dec 2015
- ENERGY STAR certified
- 23 Jan 2019
Certified under the same record
The maker lists these as the same machine or a variant of it: Liebert eXM, 51SN250NAA.
Source: ENERGY STAR certified uninterruptible power supplies dataset, US EPA, record 2335465, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the 51SA250NAA
Certified UPS units from other makers within 25% of its VA rating.
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| Liebert 51SA250NAA | 250 kVA / 250 kW | Multi-Mode Double Conversion | 96.6% | 10 min |
| Delta DPH-250K-HV | 250 kVA / 250 kW | Multi-Mode Double Conversion | 94.9% | 10 min |
| Schneider Electric Galaxy VM 225 kVA UPS Parallel 480-480 V, 65kAIC | 225 kVA / 202.5 kW | Double Conversion | 97.0% | - |
| Schneider Electric GVMRB225KG65S | 225 kVA / 202.5 kW | Double Conversion | 97.0% | - |
| Schneider Electric Galaxy VM 225 kVA UPS Single 480-480 V, 65kAIC, | 225 kVA / 202.5 kW | Double Conversion | 97.0% | - |
| Mitsubishi 9900Aegis Series | 225 kVA / 202.5 kW | Double Conversion | 96.5% | - |
Vertiv
More Vertiv UPS battery backups
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| 10B14763GG103 | 450 kVA / 405 kW | Multi-Mode Double Conversion | 97.2% | 30 min |
| 10B14789GF103 | 825 kVA / 743 kW | Multi-Mode Double Conversion | 97.7% | 30 min |
| 47SA040A[0|1|2|3][C|Y][0|F|H|M|G|L][0|1] | 10 kVA / 10 kW | Multi-Mode Double Conversion | 94.2% | 34 min |
| 47SA100A[0|1|2|3][C|Y][0|F|H|M|G|L][0|1] | 60 kVA / 60 kW | Multi-Mode Double Conversion | 95.8% | 10 min |
| 47SA120A[0|1|2|3][C|Y][0|F|H|M|G|L][0|1] | 120 kVA / 120 kW | Multi-Mode Double Conversion | 95.6% | 10 min |
| 51SA030QAA | 30 kVA / 30 kW | Multi-Mode Double Conversion | 96.3% | 10 min |
| 51SA030QBA | 30 kVA / 30 kW | Multi-Mode Double Conversion | 95.2% | 10 min |
| 51SA050BAA | 50 kVA / 50 kW | Multi-Mode Double Conversion | 96.4% | 10 min |