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

20000 VA · 20000 W W

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Capacity 20000 VA
Wattage 20000 W

APC Easy UPS 3S Pro 20 kVA 400 V 3:3 UPS for external batteries is a 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
Released: 2026-04-15
Part number: E3SP20KH
EAN / UPC: 0731304766155

Features

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 (max): 400 V
Output frequency: 50/60 Hz
Number of input phases: 3
Number of output phases: 3
Output voltage Total Harmonic Distortion (THD): 5%
Input current Total Harmonic Distortion (THD): 3%

Battery

Battery technology: Sealed Lead Acid (VRLA)

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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: 250 mm
Depth: 660 mm
Height: 629 mm
Weight: 37 kg

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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. Includes dust filter and conformance-coated boards for harsh environments. This UPS is supplied without batteries, so you can easily customize the battery solution. Ideal for small businesses.

User manual (PDF) · Datasheet (PDF)