APC Easy UPS 3S Pro 20kVA 400V 3:3 UPS for internal batteries

20000 VA · 20000 W W · Double-conversion (Online)

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Capacity 20000 VA
Wattage 20000 W
Topology Double-conversion (Online)

APC Easy UPS 3S Pro 20kVA 400V 3:3 UPS for internal batteries is a double-conversion (online) UPS rated 20000 VA (20000 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: 2026-04-15

Specifications

Key specs

Capacity: 20000 VA
Wattage: 20000 W
Topology: Double-conversion (Online)
Released: 2026-04-15
Part number: E3SP20KHB
EAN / UPC: 0731304791560

Features

UPS topology: Double-conversion (Online)
Output power capacity: 20 kVA
Output power: 20000 W
Input operation voltage (min): 380 V
Input operation voltage (max): 415 V
Input frequency: 40/70 Hz
Output operation voltage (min): 380 V
Output operation voltage (max): 415 V
Output frequency: 50/60 Hz
Heat dissipation: 2971 BTU/h
Number of input phases: 3
Number of output phases: 3
Crest factor: 3:1
Noise level: 57 dB

Battery

Battery technology: Lead-Acid

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Design

Form factor: Tower
Product colour: White
Control type: Touch
Display type: LCD
International Protection (IP) code: IP20

Operational conditions

Operating temperature (T-T): 0 - 40 °C
Storage temperature (T-T): -25 - 55 °C
Operating relative humidity (H-H): 0 - 95%
Storage relative humidity (H-H): 0 - 95%

Power

Input current (max): 31 A

Weight & dimensions

Width: 380 mm
Depth: 907 mm
Height: 1400 mm
Weight: 119 kg

Check the manufacturer's page before buying.

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About this product

High-efficiency 3-phase UPS that features advanced product features, competitive specifications, and robust electrical design, making business continuity easy in the data center or electrical room. This is an exceptionally easy to install, operate, maintain, and service 20 kVA UPS, ideal for small and medium businesses. Includes dust filter and conformance-coated boards for harsh environments. This UPS is for internal batteries, but is supplied without batteries, so you can easily customize the battery runtime.

User manual (PDF) · Datasheet (PDF)

Easy UPS 3S Pro 20kVA 400V 3:3 UPS for internal batteries vs similar UPS

	APC Easy UPS 3S Pro 20kVA 400V 3:3 UPS for internal batteries	APC E3SUPS20KFB1 20000 VA UPS	APC SRYL20K20RMXLT 20000 VA UPS	Vertiv Liebert ITA2 20000 VA UPS
Capacity	20000 VA	20000 VA	20000 VA	20000 VA
Wattage	20000 W	20000 W	20000 W	20000 W
Topology	Double-conversion (Online)	Double-conversion (Online)	Double-conversion (Online)	Double-conversion (Online)
Released	2026	2026	2023	2026