APC Easy 3S

40000 VA · 40000 W W · Double-conversion (Online)

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Capacity 40000 VA
Wattage 40000 W
Topology Double-conversion (Online)
Output waveform Pure sine

APC Easy 3S is a double-conversion (online) UPS rated 40000 VA (40000 W). Add up what you plug in (PC, monitor, router) and keep it under about 70% of the watt rating, so it doesn't run flat in seconds during a power cut. It came out in 2026.

Released: 2026-03-31

Specifications

Key specs

Capacity: 40000 VA
Wattage: 40000 W
Topology: Double-conversion (Online)
Output waveform: Pure sine
Released: 2026-03-31
Part number: E3SUPS40KH-BR

Features

UPS topology: Double-conversion (Online)
Output power capacity: 40 kVA
Output power: 40000 W
Waveform: Pure sine
Input operation voltage (min): 304 V
Input operation voltage (max): 477 V
Input frequency: 45/65 Hz
Output operation voltage (min): 380 V
Output operation voltage (max): 415 V
Output frequency: 50/60 Hz
Maximum current: 73 A
Number of input phases: 3
Number of output phases: 3
Input power factor: 0.99
Crest factor: 3:1
Overload capacity (10 minutes): 125%
Overload capacity (1 minute): 150%
Output voltage Total Harmonic Distortion (THD): 3%
Input current Total Harmonic Distortion (THD): 3%
Noise level: 63 dB

Ports & interfaces

SmartSlot: Yes

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Design

Form factor: Tower
Product colour: White
International Protection (IP) code: IP20

Operational conditions

Operating temperature (T-T): 0 - 40 °C
Storage temperature (T-T): -15 - 40 °C
Operating relative humidity (H-H): 0 - 95%
Storage relative humidity (H-H): 0 - 95%
Operating altitude: 0 - 984.3 m
Non-operating altitude: 0 - 14763.6 m

Weight & dimensions

Width: 250 mm
Depth: 900 mm
Height: 770 mm
Weight: 70 kg

Other features

Output voltage: 400 V

Check the manufacturer's page before buying.

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Easy 3S vs similar UPS

	APC Easy 3S	APC E3SUPS40KFB 40000 VA UPS	CyberPower LCD OL3T040KERTHDS 40000 VA UPS	CyberPower LCD HSTP3T40KE 40000 VA UPS
Capacity	40000 VA	40000 VA	40000 VA	40000 VA
Wattage	40000 W	40000 W	40000 W	36000 W
Topology	Double-conversion (Online)	Double-conversion (Online)	Double-conversion (Online)	Double-conversion (Online)
Output waveform	Pure sine	Pure sine	Pure sine	Pure sine
Released	2026	2026	2025	2025