Vertiv GXT5-15KMVRT11UXLN Online Double Conversion Rack/Tower UPS
Overview
The Vertiv Liebert GXT5-15KMVRT11UXLN is a 15,000 VA / 15,000 W online double conversion UPS designed for mid-to-large data centers, server rooms, and network closets where true isolation between utility power and critical loads is non-negotiable. Unlike line-interactive or standby topologies, the GXT5 keeps your equipment continuously powered through its inverter — utility fluctuations, brownouts, and transfer transients simply don't reach the load. If you're protecting blade chassis, storage arrays, or edge compute stacks that can't tolerate even a 10ms transfer gap, that matters.
The GXT5-15KMVRT11UXLN (often searched as GXT5 15KMVRT11UXLN) ships in a flexible rack/tower form factor at 11U rack height, allowing deployment in both open-frame racks and tower configurations without additional conversion hardware. Input and output are hardwired, appropriate for a 15kW load that's well beyond the range of any NEMA receptacle. Explore the full Vertiv power protection catalog for complementary extended battery modules and accessories.
Key Features
- 15,000 VA / 15,000 W Unity Power Factor: A 1.0 power factor means every VA of capacity is usable as a watt — no derating for modern server PSUs that draw close to unity. A 15kVA unit from an older generation might only deliver 12kW; this one delivers the full 15kW you're buying.
- Online Double Conversion Topology: The load runs off the inverter at all times. Utility power charges the battery through the rectifier continuously. There is zero transfer time on a utility failure — the inverter never stops, so the load never sees an interruption. Critical for storage controllers and hypervisors that log transfer-event faults.
- Up to 98% Efficiency in Active ECO Mode: ECO mode bypasses the inverter when utility power is within tolerance, reducing heat dissipation and operating cost significantly. At 15kW continuous draw, the difference between 95% (online mode) and 98% efficiency is roughly 450W of wasted heat eliminated — meaningful for cooling budgets in dense deployments. Online mode holds 95%, still strong for this class.
- 208/120VAC User-Configurable Output: A single UPS supports both 208VAC loads (PDUs, 3-phase-derived equipment) and 120VAC branch circuits without additional step-down transformers. Input accepts 176–280VAC, giving solid tolerance against building-level voltage sag before switching to battery.
- Factory Pre-Installed IntelliSlot RDU120 SNMP/Webcard: Most competitors ship SNMP as an optional add-on card. The GXT5 includes the Liebert IntelliSlot RDU120 out of the box — SNMP traps, web dashboard, and serial out-of-band management are live on day one. USB and RS232/RS485 ports add NMS flexibility. This matters when you need to integrate the UPS into a monitoring platform like DCIM, NMS, or a managed network infrastructure stack immediately.
- Full-Color Graphic LCD with Gravity-Sensing Orientation: The display auto-rotates based on whether the unit is racked or towered. Runtime remaining, load percentage, input/output voltage, and battery status are readable at a glance during a live event — no laptop needed to assess UPS state during an incident.
- Hardwired Input/Output with Optional PODs: At 15kW, hardwired connections are the correct design. Optional Power Output Distribution (POD) modules allow structured outlet distribution downstream without requiring a separate external PDU for every branch — cleaner wiring, documented circuit paths.
- ENERGY STAR 2.0 Certified: Qualifies for utility rebate programs in many jurisdictions and satisfies green data center procurement requirements. Combined with 98% ECO efficiency, the GXT5 keeps operational power costs lower than non-certified alternatives at this capacity tier.
- UL1778 / c-UL / RoHS2 / REACH Listed: UL1778 is the North American UPS safety standard — required for commercial installation in most jurisdictions and mandatory for insurance compliance in data center environments. c-UL extends coverage to Canadian installations. RoHS2 and REACH compliance supports EU-bound deployments and corporate sustainability mandates.
- Operating Range +32 to +104°F (0–40°C): Covers standard data center environments (ASHRAE A1/A2 ranges) and warmer edge or IDF closet installations up to 40°C — without derating, per the published spec.
Integration & Compatibility
The pre-installed IntelliSlot RDU120 card enables SNMP v1/v2/v3 and web-based management immediately after network connection — no firmware provisioning of a separate card required. RS232 and RS485 serial ports support graceful shutdown integration with servers and hypervisors via vendor shutdown agents. The external battery connector allows capacity expansion with compatible Liebert extended battery cabinets when runtime requirements grow. The online UPS category includes compatible extended battery modules and PDU accessories for full power chain design. For environments requiring rack-level power distribution downstream, pair with a matching rack PDU sized for the 208V hardwired output. Consult a UPS sizing and runtime guide to confirm battery runtime at your actual load before specifying this unit.
Frequently Asked Questions
Q: What is the input voltage range for the GXT5-15KMVRT11UXLN?
A: The typical input voltage is 208VAC, with an accepted range of 176–280VAC. This provides tolerance against building-level sag before the unit switches to battery operation.
Q: Does the GXT5-15KMVRT11UXLN include a network management card?
A: Yes. The Vertiv Liebert IntelliSlot RDU120 SNMP/Webcard is factory pre-installed. SNMP and web management are active out of the box. USB, RS232, and RS485 ports are also included for additional management options.
Q: Can the GXT5-15KMVRT11UXLN be installed in both rack and tower orientations?
A: Yes. The unit supports a flexible rack/tower form factor. The full-color LCD panel includes gravity-sensing orientation so the display remains readable in either installation position.
Q: What output voltages does the GXT5-15KMVRT11UXLN support?
A: Output is user-configurable for 208VAC or 120VAC, allowing a single unit to serve both high-voltage rack PDU loads and 120V branch circuit equipment without additional step-down transformers.
Q: Is the GXT5-15KMVRT11UXLN ENERGY STAR certified?
A: Yes. It carries ENERGY STAR 2.0 certification, which qualifies it for utility rebate programs in many jurisdictions and supports green data center procurement policies.
Q: How is the GXT5-15KMVRT11UXLN connected — does it use a power cord?
A: Input and output are hardwired — there are no receptacles or cord sets at this power level. Optional POD (Power Output Distribution) modules are available to provide structured outlet distribution downstream.
The GXT5-15KMVRT11UXLN sits in a capacity tier where specification choices start to have serious infrastructure consequences. The standout spec for me is the unity power factor — 15,000 VA equals 15,000 W with no derating. I've seen older 15kVA units deliver only 12kW to the load because of a 0.8 PF rating; that gap matters when you're calculating whether your UPS covers a fully loaded server chassis. Pair that with online double conversion and you have genuine zero-transfer protection, not the 4–10ms gap that line-interactive topologies expose during utility events.
Technical Highlights:
- 98% Active ECO Mode Efficiency: At 15kW continuous, the gap between 95% online mode and 98% ECO mode represents roughly 450W of heat load eliminated — that's meaningful for cooling in dense racks. ECO mode is the right default when utility power quality in your facility is stable.
- Factory IntelliSlot RDU120 SNMP Card: Day-one SNMP integration with no additional card cost is a genuine differentiator at this price point. RS232 and RS485 are both present for legacy shutdown agent support alongside the network card — useful in mixed-vintage server environments.
- 176–280VAC Input Range: This wide range keeps the GXT5 on bypass during moderate utility fluctuations rather than cycling to battery unnecessarily, which extends battery service life in facilities with variable incoming power quality.
Deployment Considerations:
- At 396.6 lbs, this unit requires proper floor loading assessment before rack installation — a standard 4-post rack needs verified weight rating, and you will need a lift or crew for positioning. Plan accordingly before scheduling the install.
- Input and output are hardwired only — no NEMA plug. This requires a licensed electrician for termination and means lead time for electrical rough-in must be factored into your deployment timeline. Optional POD modules handle downstream outlet distribution, but the upstream connection is a hard electrical work item.
The GXT5-15KMVRT11UXLN is the right specification for a mid-density co-lo cage, a dedicated server room supporting virtualization and SAN infrastructure, or an edge data center node where utility quality is inconsistent and zero-transfer protection is a hard requirement from the application team.
