Product comparison · 2 uninterruptible power supplies (upss)

CyberPower ST425 uninterruptible power supply (UPS) Standby (Offline) 0.425 kVA vs CyberPower UT400EG uninterruptible power supply (UPS) Line-Interactive 0.4 kVA

29specifications compared
21differ
8identical
24known for one product only

Key differences

UPS topology
- ST425 uninterruptible power supply (UPS) Standby (Offline) 0.425 kVA:Standby (Offline)
- UT400EG uninterruptible power supply (UPS) Line-Interactive 0.4 kVA:Line-Interactive
Output power capacity
- ST425 uninterruptible power supply (UPS) Standby (Offline) 0.425 kVA:0.425 kVA
- UT400EG uninterruptible power supply (UPS) Line-Interactive 0.4 kVA:0.4 kVA
Output power
- ST425 uninterruptible power supply (UPS) Standby (Offline) 0.425 kVA:260 W
- UT400EG uninterruptible power supply (UPS) Line-Interactive 0.4 kVA:250 W
Waveform
- ST425 uninterruptible power supply (UPS) Standby (Offline) 0.425 kVA:Pseudo sine
- UT400EG uninterruptible power supply (UPS) Line-Interactive 0.4 kVA:Sine
Input operation voltage (min)
- ST425 uninterruptible power supply (UPS) Standby (Offline) 0.425 kVA:96 V
- UT400EG uninterruptible power supply (UPS) Line-Interactive 0.4 kVA:165 V
Input operation voltage (max)
- ST425 uninterruptible power supply (UPS) Standby (Offline) 0.425 kVA:140 V
- UT400EG uninterruptible power supply (UPS) Line-Interactive 0.4 kVA:290 V
Input frequency
- ST425 uninterruptible power supply (UPS) Standby (Offline) 0.425 kVA:47/63 Hz
- UT400EG uninterruptible power supply (UPS) Line-Interactive 0.4 kVA:50/60 Hz
Output operation voltage (max)
- ST425 uninterruptible power supply (UPS) Standby (Offline) 0.425 kVA:120 V
- UT400EG uninterruptible power supply (UPS) Line-Interactive 0.4 kVA:230 V

Side by side

Differences highlightedShow differences only

Comparison of ST425, UT400EG
53 specifications	A CyberPower ST425 uninterruptible power supply (UPS) Standby (Offline) 0.425 kVA Model ST425 View product	B CyberPower UT400EG uninterruptible power supply (UPS) Line-Interactive 0.4 kVA Model UT400EG View product
Features10 differ
UPS topologyDiffers	Standby (Offline)	Line-Interactive
Output power capacityDiffers	0.425 kVA	0.4 kVA
Output powerDiffers	260 W	250 W
WaveformDiffers	Pseudo sine	Sine
Input operation voltage (min)Differs	96 V	165 V
Input operation voltage (max)Differs	140 V	290 V
Input frequencyDiffers	47/63 Hz	50/60 Hz
Output operation voltage (min)Known for one	120 V	Unknown — not stated by the source
Output operation voltage (max)Differs	120 V	230 V
Output frequencyKnown for one	50/60 Hz	Unknown — not stated by the source
Surge energy ratingDiffers	890 J	125 J
Transfer time (Line Mode to Battery Mode)Differs	8 ms	4 ms
EMI/RFI noise filtering	Yes	Yes
Surge protectionKnown for one	Yes	Unknown — not stated by the source
Power protection features	Overload	Overload
Audible alarm(s)Known for one	Yes	Unknown — not stated by the source
Audible alarm modesKnown for one	Alarm when on battery, Fault, Low battery alarm, Overload alarm	Unknown — not stated by the source
Socket circuit breakerKnown for one	Yes	Unknown — not stated by the source
Automatic Voltage Regulation (AVR)Known for one	Unknown — not stated by the source	Yes
Number of input phasesKnown for one	Unknown — not stated by the source	1
Ports & interfaces1 differ
AC outlet typesDiffers	NEMA 5-15R	Type F
Power plugKnown for one	NEMA 5-15P	Unknown — not stated by the source
AC outlets quantityKnown for one	8 AC outlet(s)	Unknown — not stated by the source
Number of type F outputsKnown for one	Unknown — not stated by the source	3
Ethernet LAN (RJ-45) portsKnown for one	Unknown — not stated by the source	2
Battery1 differ
Battery technology	Sealed Lead Acid (VRLA)	Sealed Lead Acid (VRLA)
Battery capacityDiffers	2.9 Ah	5 Ah
Battery voltage	12 V	12 V
Number of batteries supportedKnown for one	1	Unknown — not stated by the source
Typical backup time at full loadKnown for one	1.5 min	Unknown — not stated by the source
Typical backup time at half loadKnown for one	6 min	Unknown — not stated by the source
Battery recharge timeKnown for one	8 h	Unknown — not stated by the source
Charging currentKnown for one	Unknown — not stated by the source	1.74 A
Design3 differ
Form factorDiffers	Compact	Tower
Product colour	Black	Black
Cable lengthDiffers	1.5 m	1.4 m
LED indicatorsDiffers	Power	Yes
Housing materialKnown for one	Unknown — not stated by the source	Plastic
Operational conditions2 differ
Operating temperature (T-T)	0 - 40 °C	0 - 40 °C
Storage temperature (T-T)Differs	-15 - 45 °C	-20 - 50 °C
Operating relative humidity (H-H)Differs	0 - 95%	0 - 90%
Operating altitude	0 - 3000 m	0 - 3000 m
Non-operating altitudeKnown for one	0 - 15000 m	Unknown — not stated by the source
Storage relative humidity (H-H)Known for one	Unknown — not stated by the source	0 - 90%
Packaging contentidentical
ManualKnown for one	Yes	Unknown — not stated by the source
Certificatesidentical
Compliance certificates	RoHS	RoHS
CertificationKnown for one	Unknown — not stated by the source	CE
Sustainabilityidentical
Sustainability certificatesKnown for one	ENERGY STAR	Unknown — not stated by the source
Safety regulation & standardsidentical
SafetyKnown for one	UL1778, cUL, FCC DOC B, CEC	Unknown — not stated by the source
Weight & dimensions4 differ
WidthDiffers	210 mm	84 mm
DepthDiffers	81 mm	280 mm
HeightDiffers	114 mm	174 mm
WeightDiffers	1.72 kg	3.8 kg

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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