Which Schneider Electric UPS Is Right for Your Facility? A Complete Selection Guide

From medium-density data centers to hyperscale facilities — Power Solutions explains how to choose the right Schneider Electric Galaxy three-phase UPS with confidence

By Molly Gross, Principal, Power Solutions, LLC

Unplanned downtime costs Fortune 1000 companies up to $2.5 billion annually, and choosing the right UPS is one of the most important decisions you can make for operational continuity. This whitepaper walks through Schneider Electric’s three-phase Galaxy UPS portfolio — the Galaxy VS (10–150 kVA), Galaxy VL (200–500 kVA), and Galaxy VX (500–1,500 kVA) — and explains how to match the right model to your facility based on load size, environment, operating mode, scalability and redundancy, and battery chemistry. Power Solutions is an APC Elite Partner and vendor-neutral advisor. Download this free guide for expert, unbiased selection guidance.

Whitepaper Summary

Q: How do I size a three-phase UPS?

A: Add up the power draw of the equipment you need to protect, then add a 20–25% margin for growth. Size from actual measured load wherever possible; nameplate ratings typically overstate it and can lead to an oversized, less efficient system.

Q: Which Galaxy UPS fits my load?

A: The Galaxy VS covers 10–150 kVA with internal N+1 redundancy in a single cabinet. The Galaxy VL covers 200–500 kVA with a scalable frame and parallel options for redundancy. The Galaxy VX covers 500–1,500 kVA for large enterprise and hyperscale data centers.

Q: What is ECOnversion mode?

A: ECOnversion is a Schneider Electric operating mode on the Galaxy VS, VL, and VX that reaches up to 99% efficiency while keeping the inverter active, compared with about 96–97% in standard double-conversion mode.

Q: Should I choose VRLA or lithium-ion batteries?

A: All Galaxy models support both. VRLA has the lower upfront cost. Lithium-ion offers about 10 years of service life versus 3–5 years for VRLA, a smaller and lighter footprint, and integrated battery management, and it typically has a lower total cost of ownership for standard-runtime applications. See our guide, Lithium-Ion UPS Batteries: A Complete Guide to TCO, Safety, and Making the Right Choice for Your Infrastructure.

Q: What replaced the Galaxy VM?

A: The Galaxy VM reached end-of-life in September 2025. Depending on your load, runtime requirements, and available space, the Galaxy VL or Galaxy VX is typically the recommended replacement.

Q: How do I get help choosing the right Schneider Electric UPS?

A: Power Solutions, LLC, as an APC Elite Partner with 30+ years of experience, provides free guidance on UPS selection, configuration, procurement, and installation.

Download this whitepaper.