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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.

ModelCapacityTopologyEfficiencyRuntime @ 50%
Liebert EXS F3 series30 kVA / 30 kWMulti-Mode Double Conversion94.8%45 min
Vertiv Liebert EXS F3 series30 kVA / 30 kWMulti-Mode Double Conversion94.8%45 min
Liebert 51SA030QAA30 kVA / 30 kWMulti-Mode Double Conversion96.3%10 min
Vertiv 51SA030QAA30 kVA / 30 kWMulti-Mode Double Conversion96.3%10 min
Liebert 51SA030QBA30 kVA / 30 kWMulti-Mode Double Conversion95.2%10 min
Vertiv 51SA030QBA30 kVA / 30 kWMulti-Mode Double Conversion95.2%10 min

Eaton

More Eaton UPS battery backups

ModelCapacityTopologyEfficiencyRuntime @ 50%
5P1000RT2UG2-L1,000 VA / 920 WLine Interactive98.6%18 min
5P1150IRT2UG2-L1,150 VA / 920 WLine Interactive98.5%18 min
5P1550IRT2UG2-L1,550 VA / 1,350 WLine Interactive98.9%12 min
5P1550RT2UG2-L1,440 VA / 1,350 WLine Interactive98.7%12 min
5P550RG2-L550 VA / 495 WLine Interactive98.5%18 min
5P650IRG2-L650 VA / 520 WLine Interactive98.4%16 min
5PX1000IRT2UG21,000 VA / 1,000 WLine Interactive98.5%17 min
5PX1000RTG21,000 VA / 1,000 WLine Interactive98.5%16 min

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