APC by Schneider Electric SRT6KRMXLIM vs Vertiv GXT5LI-6000GVRT3UXLN: Specification Comparison
Both the APC Smart-UPS SRT6KRMXLIM and the Vertiv Liebert GXT5LI-6000GVRT3UXLN are 6000VA rack-mount, double-conversion (online) UPS units targeting data centers, network closets, and mission-critical AC loads in the 200–240V range. Buyers evaluating either unit are looking for true online topology at 6kVA with sine-wave output and broad input voltage tolerance. This comparison examines power conditioning and electrical performance, physical and environmental fit, and installation and compliance characteristics based solely on published specifications.
In This Guide
- How do the two units compare on power conditioning quality and electrical protection?
- Which unit handles a wider input voltage range and fits more challenging operating environments?
- How do the units differ in installation method, compliance certifications, and battery technology?
- Which should you choose: the SRT6KRMXLIM or the GXT5LI-6000GVRT3UXLN?
- Side-by-Side Specs
- FAQ
How do the two units compare on power conditioning quality and electrical protection?
Both units deliver 6000VA/6000W at true double-conversion topology with pure sine-wave output, so fundamental protection class is identical. The SRT6KRMXLIM specifies output voltage THD at ≤3% and a crest factor of 3:1, giving installers a hard number for load compatibility with non-linear loads such as servers and switching power supplies. The GXT5LI-6000GVRT3UXLN does not publish an output THD figure or crest factor in the provided specifications.
On surge energy, the SRT6KRMXLIM publishes a 480 J surge energy rating and explicitly lists surge protection as a feature. The GXT5LI-6000GVRT3UXLN provides no surge energy rating in the provided specs. The SRT6KRMXLIM also lists output frequency as 50/60 Hz, while no output frequency spec is provided for the GXT5LI-6000GVRT3UXLN.
The GXT5LI-6000GVRT3UXLN specifies output voltage accuracy of ±1% and user-configurable output voltage (200–240VAC default 230VAC), which is useful for mixed-voltage environments. The SRT6KRMXLIM lists output voltage range as 220–240V with no user-configurable voltage noted in the provided specs.
Which unit handles a wider input voltage range and fits more challenging operating environments?
The SRT6KRMXLIM accepts input voltages from 160V to 275V across a 40–70Hz frequency window, a notably wide range designed for marine and unstable-grid environments, as indicated by the 'Marine' designation in its model name. This makes it well-suited for generator-backed sites, marine vessels, or regions with significant voltage fluctuations.
The GXT5LI-6000GVRT3UXLN specifies an input voltage range of 200V–240V. No input frequency range is provided in the published specifications. Its operating temperature is specified at 32°F–104°F (0°C–40°C) with a 10% derating noted at 50°C. The SRT6KRMXLIM does not provide an operating temperature range in the supplied specifications.
The GXT5LI-6000GVRT3UXLN lists physical dimensions (5.25 in H × 16.9 in W × 35 in D, 99 lbs) enabling precise rack and floor-load planning. The SRT6KRMXLIM does not provide physical dimensions or weight in the supplied specifications, which may require a separate datasheet lookup before rack layout can be finalized.
How do the units differ in installation method, compliance certifications, and battery technology?
The GXT5LI-6000GVRT3UXLN uses hardwired input (L1-L2/N-G), which is typical for high-density rack UPS at this power level and requires licensed electrician installation. It carries a published agency approval list: IEC 62040-1:2008+A1 2013, IEC 62040-2 2nd Ed., IEC 62619 1st Ed., IEC 61000-3-2, IEC 61000-3-12, CISPR 22 Class A, FCC Part 15 Class A, and UL 1778. These certifications are relevant for regulated environments and international deployments.
The SRT6KRMXLIM does not specify its input wiring method (plug or hardwire) or list agency certifications in the provided specifications. It does, however, include Emergency Power Off (EPO), audible alarms, and auto-restart as explicitly listed features. EPO is particularly relevant for data center and marine installations requiring rapid de-energization. No EPO, alarm, or auto-restart specs are published for the GXT5LI-6000GVRT3UXLN in the provided data.
The GXT5LI-6000GVRT3UXLN is specified as lithium-ion battery technology, reflected in its model name (GXT5LI). Lithium-ion chemistry typically offers longer service life, faster recharge, and a smaller footprint than VRLA. The SRT6KRMXLIM does not specify battery chemistry in the provided specifications. The noise level of the SRT6KRMXLIM is published at 55 dB; no acoustic specification is provided for the GXT5LI-6000GVRT3UXLN.
Which should you choose: the SRT6KRMXLIM or the GXT5LI-6000GVRT3UXLN?
Our take: The SRT6KRMXLIM is the stronger choice when input power quality is unpredictable or the installation environment falls outside standard data-center conditions — its 160–275V input range (vs. 200–240V for the GXT5LI-6000GVRT3UXLN) and 40–70Hz frequency acceptance make it explicitly suited for marine, generator, or unstable-grid deployments, and its ≤3% output THD and 480 J surge rating provide hard benchmarks the GXT5LI-6000GVRT3UXLN specs do not match or counter. Conversely, the GXT5LI-6000GVRT3UXLN is the stronger choice for regulated enterprise data centers: its lithium-ion battery chemistry, ±1% user-configurable output voltage, full IEC/UL/FCC compliance listing, and published physical dimensions (99 lbs, 5.25U × 35 in deep) give facilities teams the documentation and battery longevity needed for formal procurement. Buyers who require EPO, audible alarms, or auto-restart as specified features should note those are confirmed only on the SRT6KRMXLIM.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | APC by Schneider Electric SRT6KRMXLIM | Vertiv GXT5LI-6000GVRT3UXLN |
|---|---|---|
| UPS Topology | Double-conversion (Online) | Double-conversion (Online, inferred from GXT5 series) |
| Power Rating (VA) | 6000 VA | 6000 VA |
| Power Rating (Watts) | 6000 W | 6000 W |
| Output Waveform | Pure Sine | Pure Sine (inferred; not stated in provided specs) |
| Input Voltage Range | 160V – 275V | 200V – 240V |
| Input Frequency Range | 40 – 70 Hz | — |
| Output Voltage Range | 220V – 240V | 200–240VAC (User-Configurable); default 230VAC |
| Output Voltage Accuracy | — | ±1% |
| Output THD | ≤3% | — |
| Crest Factor | 3:1 | — |
| Surge Energy Rating | 480 J | — |
| Battery Technology | — | Lithium-ion |
| Emergency Power Off (EPO) | Yes | — |
| Audible Alarms | Yes | — |
| Auto-Restart | Yes | — |
| Input Wiring | — | Hardwired (L1-L2/N-G) |
| Agency Certifications | — | IEC 62040-1, IEC 62040-2, IEC 62619, IEC 61000-3-2, IEC 61000-3-12, CISPR 22 Class A, FCC Part 15 Class A, UL 1778 |
| Operating Temperature | — | 0°C to 40°C (10% derating at 50°C) |
| Noise Level | 55 dB | — |
| Weight | — | 99 lbs |
| Dimensions (H × W × D) | — | 5.25 in × 16.9 in × 35 in |
Frequently Asked Questions
Which should you choose: the SRT6KRMXLIM or the GXT5LI-6000GVRT3UXLN?
The SRT6KRMXLIM is the stronger choice when input power quality is unpredictable or the installation environment falls outside standard data-center conditions — its 160–275V input range (vs. 200–240V for the GXT5LI-6000GVRT3UXLN) and 40–70Hz frequency acceptance make it explicitly suited for marine, generator, or unstable-grid deployments, and its ≤3% output THD and 480 J surge rating provide hard benchmarks the GXT5LI-6000GVRT3UXLN specs do not match or counter. Conversely, the GXT5LI-6000GVRT3UXLN is the stronger choice for regulated enterprise data centers: its lithium-ion battery chemistry, ±1% user-configurable output voltage, full IEC/UL/FCC compliance listing, and published physical dimensions (99 lbs, 5.25U × 35 in deep) give facilities teams the documentation and battery longevity needed for formal procurement. Buyers who require EPO, audible alarms, or auto-restart as specified features should note those are confirmed only on the SRT6KRMXLIM.
Is the SRT6KRMXLIM or GXT5LI-6000GVRT3UXLN better for sites with unstable or wide-ranging input voltage?
Based on published specs, the SRT6KRMXLIM accepts 160V–275V input across 40–70Hz, explicitly designed for marine and unstable-grid environments. The GXT5LI-6000GVRT3UXLN specifies 200V–240V input with no published frequency range. If your site experiences significant voltage swings below 200V or above 240V, the SRT6KRMXLIM's wider window is the spec-confirmed advantage.
Which unit is better documented for regulatory or compliance-sensitive data center deployments?
The GXT5LI-6000GVRT3UXLN provides a published agency approval list covering IEC 62040-1, IEC 62040-2, IEC 62619, IEC 61000-3-2, IEC 61000-3-12, CISPR 22 Class A, FCC Part 15 Class A, and UL 1778. No agency certifications are listed in the provided SRT6KRMXLIM specifications. For formal enterprise or government procurement requiring documented compliance, the GXT5LI-6000GVRT3UXLN has the advantage based on available specs.
Does either unit use lithium-ion batteries, and does that matter for long-term ownership cost?
The GXT5LI-6000GVRT3UXLN is specified as a lithium-ion UPS (indicated in both the product name and SKU). Lithium-ion batteries generally offer longer cycle life and faster recharge compared to traditional VRLA. The SRT6KRMXLIM does not specify battery chemistry in the provided specifications, so a direct battery-technology comparison cannot be made from available data alone.
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