UPS battery backupsENERGY STAR certified
Delta RT-6K
6,000 VA / 6,000 W double conversion UPS, model number RT-6K (UPS602R2RT2N0B8).
Capacity
6,000 VA
6,000 W real power
Topology
Double Conversion
Efficiency
94.3%
weighted, as tested
Runtime @ 50%
9 min
3 min at full load
A UPS has two ratings and the lower one is the limit. This unit is rated 6,000 VA and 6,000 W, so the equipment plugged into its battery outlets should draw no more than about 4,800 W if you want the usual 20% headroom. How to size a UPS.
Its weighted efficiency of 94.3% compares with a median of 94.6% across 98 certified units within 25% of its capacity. With nothing plugged in it still draws 53.0 W, about $60 a year at 13¢/kWh just to stand ready.
- Maker
- Delta
- Model
- RT-6K
- Model number
- RT-6K (UPS602R2RT2N0B8)
- Apparent power rating
- 6,000 VA
- Real power rating
- 6,000 W
- Power factor
- 1.00
- Topology
- Double Conversion
- Intended use
- Commercial
- Battery
- Valve Regulated Lead-acid Battery
- Runtime at 50% load
- 9 min
- Runtime at 100% load
- 3 min
- Battery warranty
- 3 yr
- Weighted efficiency
- 94.3%
- Efficiency at 25 / 50 / 75 / 100% load
- 92.0% / 94.2% / 94.5% / 94.0%
- Input power at no load
- 53.0 W
- Rack mountable
- Yes
- Rated input voltage
- 200-240 V
- Rated output voltage
- 200-240 V
- Connections
- Serial Port,Ethernet,USB Port
- Size (H x W x D)
- 88 x 440 x 430 mm
- Maker take-back program
- No
- On the market since
- Apr 2019
- ENERGY STAR certified
- 21 Mar 2019
Certified under the same record
The maker lists these as the same machine or a variant of it: RT-5K, RT-5K (UPS502R2RT2N035), RT-5K (UPS502R2RT2N0B8), RT-6K (UPS602R2RT2N035).
Source: ENERGY STAR certified uninterruptible power supplies dataset, US EPA, record 2336735, data build 2026-09-29. Figures are as the maker certified them. How we use this data.
Other makers
Machines comparable to the RT-6K
Certified UPS units from other makers within 25% of its VA rating.
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| Liebert GXT5-6000IRT5UXLN | 6,000 VA / 6,000 W | Multi-Mode Double Conversion | 94.9% | 14 min |
| Vertiv GXT5-6000IRT5UXLN | 6,000 VA / 6,000 W | Multi-Mode Double Conversion | 94.9% | 14 min |
| Liebert GXE-06k00TL1102C00 | 6,000 VA / 5,400 W | Multi-Mode Double Conversion | 95.4% | 14 min |
| Vertiv GXE-06k00TL1102C00 | 6,000 VA / 5,400 W | Multi-Mode Double Conversion | 95.4% | 14 min |
| Eaton 9PX6Ki | 6,000 VA / 5,400 W | Double Conversion | 93.7% | 8 min |
| Eaton 9PX6K | 6,000 VA / 5,400 W | Double Conversion | 93.7% | 8 min |
Delta
More Delta UPS battery backups
| Model | Capacity | Topology | Efficiency | Runtime @ 50% |
|---|---|---|---|---|
| DPH-105K-LV | 15 kVA / 15 kW | Multi-Mode Double Conversion | 95.6% | - |
| DPH-150K-HV | 50 kVA / 50 kW | Multi-Mode Double Conversion | 96.3% | 23 min |
| DPH-250K-HV | 250 kVA / 250 kW | Multi-Mode Double Conversion | 94.9% | 10 min |
| DPH-300K-HV | 50 kVA / 50 kW | Multi-Mode Double Conversion | 96.3% | 12 min |
| DPH-500K-HV | 200 kVA / 200 kW | Multi-Mode Double Conversion | 99.1% | 11 min |
| DPH-60K-LV | 15 kVA / 15 kW | Multi-Mode Double Conversion | 95.5% | 12 min |
| RT PRO-1K | 1,000 VA / 1,000 W | Multi-Mode Double Conversion | 91.4% | 10 min |
| RT PRO-2K | 2,000 VA / 2,000 W | Multi-Mode Double Conversion | 93.4% | 12 min |