Description
The Vertiv Liebert APS 20kVA Modular UPS (AS4D0NCXGNNXLKB) is a high-performance, scalable power protection system designed for mission-critical environments. With 208V single-phase input and online double-conversion technology, it ensures uninterrupted power delivery for vital systems.
This UPS supports N+1 internal redundancy, a 10-minute full-load runtime, and features hot-swappable FlexPower and battery modules for simplified maintenance and future scalability. Its rack/tower convertible design, factory-installed IntelliSlot Unity card, and SNMP/Webcard integration make it ideal for IT rooms, data centers, and enterprise applications.
Supporting up to 200% temporary overload, 92% energy efficiency, and intelligent battery management, it minimizes TCO while enhancing operational reliability. Includes step-down transformer for both 208V and 120VAC output.
| Category | Details |
|---|---|
| Manufacturer | Vertiv |
| Brand Name | Liebert |
| Product Line | APS |
| Part Number | AS4D0NCXGNNXLKB |
| UPS Topology | Online Double Conversion |
| Power Capacity | 20 kVA / 18 kW N+1 |
| Input Voltage Range | 120–280V AC |
| Output Voltage | 100–240V AC |
| Input/Output Phase | Single Phase |
| Runtime (Full Load) | 10 minutes |
| Runtime (Half Load) | 26 minutes |
| Form Factor | Rack/Tower Convertible |
| Battery Type | Valve Regulated Lead Acid (VRLA) |
| Hot-Swappable Modules | Yes (FlexPower & Battery Modules) |
| Plug Type | Hard Wire 3-wire (L-L-G) |
| Monitoring | Factory-installed SNMP/Webcard (IS-UNITY-DP), LCD Display |
| Communication Ports | USB (HID), Serial, EPO |
| Software Included | Trellis™ Power Insight |
| Humidity Tolerance | 0–95% (non-condensing) |
| Altitude Support | Up to 3,000m @ 25°C |
| Certifications | UL 1778 4th Ed, CSA 22.2, FCC Part 15 Class A, IEC/EN/AS 62040 |
| Warranty | 2-Year Limited Warranty |
| Shipping Weight | 1 lb (as listed) |
Payment & Security
Your payment information is processed securely, and we do not store credit card details or access your credit card information.
Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
- AV system design & signal flow diagrams
- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
- Physical installation & cable management
- Control system programming & configuration
- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
- Technology lifecycle & refresh planning
- Long-term service level agreements
A decade of delivery — trusted by 275+ clients across industries
