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Delta · 25 models

Delta UPS battery backups

Every Delta UPS certified under ENERGY STAR and listed for the US market, largest first. Each model page has the full certified specs and comparable machines from other makers.

ModelCapacityTopologyEfficiencyRuntime @ 50%
DPH-250K-HV250 kVA / 250 kWMulti-Mode Double Conversion94.9%10 min
DPH-500K-HV200 kVA / 200 kWMulti-Mode Double Conversion99.1%11 min
DPH-150K-HV50 kVA / 50 kWMulti-Mode Double Conversion96.3%23 min
DPH-300K-HV50 kVA / 50 kWMulti-Mode Double Conversion96.3%12 min
RT-20K3P20 kVA / 20 kWDouble Conversion95.7%10 min
RT-17K3P17 kVA / 17 kWDouble Conversion95.8%9 min
DPH-105K-LV15 kVA / 15 kWMulti-Mode Double Conversion95.6%-
DPH-60K-LV15 kVA / 15 kWMulti-Mode Double Conversion95.5%12 min
RT-15K3P15 kVA / 15 kWDouble Conversion95.6%15 min
RT-11K3P-LV11 kVA / 11 kWDouble Conversion94.1%15 min
RT-10K10 kVA / 10 kWDouble Conversion95.2%12 min
RT-10K10 kVA / 10 kWDouble Conversion94.9%11 min
RT-10K3P10 kVA / 10 kWDouble Conversion95.6%7 min
RT-10K3P10 kVA / 10 kWDouble Conversion95.1%7 min
RT-10K3P10 kVA / 10 kWDouble Conversion99.0%7 min
RT-10K3P10 kVA / 10 kWDouble Conversion99.1%7 min
RT-8K8,000 VA / 8,000 WDouble Conversion94.5%15 min
RT-6K6,000 VA / 6,000 WDouble Conversion94.3%9 min
RT PRO-3K3,000 VA / 3,000 WMulti-Mode Double Conversion93.6%14 min
RT-3K3,000 VA / 2,700 WDouble Conversion92.0%12 min
RT PRO-2K2,000 VA / 2,000 WMulti-Mode Double Conversion93.4%12 min
RT-2K2,000 VA / 1,800 WDouble Conversion92.2%12 min
RT-1.5K1,500 VA / 1,350 WDouble Conversion91.2%12 min
RT PRO-1K1,000 VA / 1,000 WMulti-Mode Double Conversion91.4%10 min
RT-1K1,000 VA / 900 WDouble Conversion90.2%12 min

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Source: ENERGY STAR certification data, US EPA. Data build 2026-09-29. Brand names are as the maker certified them, with obvious variant spellings merged.