APC E3SUPS40KFB 40000 VA UPS

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 E3SUPS40KFB 40000 VA UPS 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: E3SUPS40KFB

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: 40 - 70 Hz
Output frequency: 50 Hz
Maximum current: 73 A
Heat dissipation: 2800 BTU/h
Power factor: 0.7

Battery

Battery technology: Lead-Acid
Battery voltage: 120 V

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Design

Form factor: Tower
Product colour: White
Display type: LCD
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%

Weight & dimensions

Width: 380 mm
Depth: 1092 mm
Height: 1400 mm
Weight: 187 kg

Other features

Output voltage: 208 V

Check the manufacturer's page before buying.

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E3SUPS40KFB vs similar UPS

	APC E3SUPS40KFB 40000 VA UPS	APC Easy 3S	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