In an era where data centers and critical infrastructure can’t afford even a moment’s downtime, uninterruptible power supplies (UPS) are the unsung heroes keeping operations alive during outages. The APC Easy UPS 3S 20 kVA 400 V 3:3 model (E3SUPS20KHB1) embodies this reliability in a compact, three-phase package tailored for small to medium businesses. With internal batteries delivering up to 15 minutes of runtime at typical loads, this double-conversion online UPS from Schneider Electric combines high efficiency, ease of use, and robust protection for servers, networks, and electrical rooms. Whether you’re safeguarding a growing data center or ensuring seamless power in commercial facilities, the E3SUPS20KHB1 makes continuity effortless. Dive in to discover why it’s a smart choice in 2025.
Key Features That Simplify Protection
The Easy UPS 3S series shines with user-centric design, prioritizing installation, operation, and maintenance without compromising performance. Standout elements include:
- ECO Mode for Efficiency: Bypasses non-essential components during stable power, hitting up to 99% efficiency while maintaining full protection—slashing energy costs without risk.
- Parallel Capability: Scale up to four units for redundancy or higher capacity, ideal for expanding IT setups.
- Intuitive Graphical Interface: Easy configuration and monitoring via a front-panel LCD, with optional SNMP card for remote management through EcoStruxure IT.
- Front-Access Servicing: Quick dust filter replacement and module swaps minimize downtime, even in tight spaces.
- Wide Input Voltage Window: Operates from 304-477V, preserving batteries for true emergencies.
- Modular Battery Design: Starts with two 7Ah VRLA strings (expandable to three) for flexible runtime extension.
These features, backed by double-conversion topology, deliver clean sine wave output with <3% THD, ensuring sensitive equipment runs flawlessly.
Technical Specifications at a Glance
Engineered for precision, the E3SUPS20KHB1 handles 20 kW loads with finesse. Here’s a snapshot of its core specs:
| Specification | Details |
|---|---|
| Model | APC Easy UPS 3S E3SUPS20KHB1 |
| Power Rating | 20 kVA / 20 kW |
| Input Voltage | 400V 3-phase (304-477V range) |
| Input Frequency | 45-65 Hz |
| Input Current (Max) | 37A |
| Output Voltage | 400V 3-phase (380V/415V options) |
| Output Frequency | 50/60 Hz (sync to mains) |
| Topology | Double conversion online |
| Efficiency | Up to 96% (double conversion); 99% (ECO mode) |
| Batteries | 2 x 7Ah VRLA modular strings (expandable to 3) |
| Battery Voltage | 240V DC |
| Audible Noise | 60 dBA at 1m |
| Operating Temperature | 0-40°C |
| Humidity | 0-95% (non-condensing) |
| Certifications | CE, IEC 62040-1-1/2/3/4, EAC, RCM, RoHS |
| Warranty | 1-year on-site repair/replace + start-up |
This setup supports a maximum short-circuit current of 10 kA, with input power factor at 0.99 for minimal distortion.
Runtime and Physical Details
At full 20 kW load, expect around 8 minutes of backup from the standard two-battery configuration, extending to 15 minutes at 70% load or 22.5 minutes at 50%—perfect for graceful shutdowns or bridging short outages. Adding the third string boosts this further, with extended options available for longer needs.
Physically, it’s rack-friendly yet floor-standing: 1400 mm H x 380 mm W x 928 mm D, weighing 446 kg (net, excluding batteries) for easy rolling into place. Shipping dimensions add pallet space at 1640 x 563 x 1014 mm and 494 kg total. Its white IP20-rated enclosure fits seamlessly in data rooms, with front/rear access for service.
The Real Benefits: Efficiency, Scalability, and Peace of Mind
Deploying the E3SUPS20KHB1 means more than just backup power—it’s about optimizing your entire setup. The wide voltage tolerance reduces battery cycling, extending lifespan in variable grids, while ECO mode can trim utility bills by 20-30% in stable environments. Parallel operation allows seamless growth, and the replaceable filters keep it humming in dusty industrial spots.
For SMBs, the straightforward install (including built-in breakers and EPO) cuts setup time, letting teams focus on core ops. With thermal dissipation at 900 BTU/hr, it runs cool under load, supporting dense configurations without extra cooling costs. Plus, its RoHS compliance and 82% recyclability align with green initiatives, future-proofing your infrastructure.
What Users Are Saying
As a relatively niche enterprise-grade unit, user reviews are emerging but unanimously positive. On select e-commerce sites, it earns a flawless 5 out of 5 stars from early adopters, who praise its “plug-and-play reliability and whisper-quiet operation.” Pros highlight the intuitive interface and expandable batteries, with one noting, “Transformed our server room—zero hiccups during tests.” No major cons surface, though some wish for longer standard runtime out-of-box. Overall, it’s hailed as a “set-it-and-forget-it powerhouse” for critical apps.
Final Thoughts: Power Protection Made Simple
The APC Easy UPS 3S 20 kVA E3SUPS20KHB1 redefines accessible three-phase protection, blending high efficiency, modularity, and ease into a 20 kW guardian for your vital systems. At competitive pricing, it’s an investment that safeguards against costly outages while optimizing energy use.
For small data centers or electrical rooms in 2025, this UPS is a no-brainer. CONTACT US @ TIACO TECHNOLOGIES to spec it out—your uptime awaits.