APC by Schneider Electric SRT8KRMXLT-IEC vs Vertiv GXT5LI-8000MVRT4UXLN: Specification Comparison
Both the APC Smart-UPS SRT8KRMXLT-IEC and the Vertiv GXT5 GXT5LI-8000MVRT4UXLN are 8000VA double-conversion online UPS units targeting data center and critical IT rack environments. They share the same topology, the same VA/watt rating, and broadly overlap in application — making them direct cross-shop candidates for buyers specifying a rackmount 8kVA online UPS. The comparison below examines power and conversion specs, physical and environmental characteristics, and connectivity and management interfaces, drawing only from the specifications provided for each unit.
In This Guide
- How do the SRT8KRMXLT-IEC and GXT5LI-8000MVRT4UXLN compare on power ratings, input range, and output quality?
- How do the two units differ in physical dimensions, weight, operating environment, and certifications?
- Which unit offers more flexibility in output connections, wiring, and remote management interfaces?
- Which should you choose: the SRT8KRMXLT-IEC or the GXT5LI-8000MVRT4UXLN?
- Side-by-Side Specs
- FAQ
How do the SRT8KRMXLT-IEC and GXT5LI-8000MVRT4UXLN compare on power ratings, input range, and output quality?
Both units are rated at 8000VA and deliver 8000W output, giving each a unity (1.0) power factor — the Vertiv GXT5LI-8000MVRT4UXLN spec states 8000VA/8000W explicitly, and the APC SRT8KRMXLT-IEC lists 8 kVA and 8000W separately, confirming the same ratio. Both use double-conversion online topology, meaning the load runs on conditioned inverter power at all times with no transfer time on mains failure.
The APC SRT8KRMXLT-IEC specifies a wide input operating range of 100–275V and an input frequency window of 40–70Hz, which gives it pronounced tolerance for poor-quality utility power without switching to battery. The Vertiv GXT5LI-8000MVRT4UXLN lists an input voltage range of 120V/240V without a stated min/max window, so the precise tolerance band is not available in the provided specs.
On output quality, the APC unit specifies a 2% output voltage total harmonic distortion (THD) and a 3:1 crest factor, indicating clean sine-wave output well-suited for sensitive electronics. The APC spec also lists a surge energy rating of 480J. Neither THD figure nor surge energy rating is provided in the Vertiv specs, so a direct output-quality comparison on those metrics cannot be made.
How do the two units differ in physical dimensions, weight, operating environment, and certifications?
Physical dimensions and weight are only provided for the Vertiv GXT5LI-8000MVRT4UXLN: 156.3 lbs, 6.9 in H × 16.9 in W × 35 in D. The APC SRT8KRMXLT-IEC does not include weight or dimensions in the provided specifications, so a size and weight comparison is not possible from the available data.
Operating temperature is documented only for the Vertiv unit: 32°F to 104°F (0°C to 40°C), with a 10% derating noted at 50°C. No operating temperature range is given for the APC SRT8KRMXLT-IEC in the provided specs. The APC unit does specify a noise level of 55 dB; no acoustic rating is provided for the Vertiv.
The Vertiv GXT5LI-8000MVRT4UXLN carries a detailed certification list: UL 1642 (Li-Ion battery cells), UL 1973 (Li-Ion battery pack with UPS), UL 1778, CSA 22.2 No. 107.3, c-UL, FCC Part 15 Class A, and Energy Star 2.0. The Vertiv's use of a Li-Ion battery pack is confirmed by these certifications. No certification listings are specified in the provided APC specs, and battery chemistry is not stated for the APC unit.
Which unit offers more flexibility in output connections, wiring, and remote management interfaces?
The APC SRT8KRMXLT-IEC specifies AC outlet types of C13 and C19 IEC couplers — standard rack PDU-compatible receptacles that allow direct connection of IEC-corded equipment without adapters. It also includes Emergency Power Off (EPO), audible alarms, and web-based management per the provided specs. The output voltage is specified at 208V.
The Vertiv GXT5LI-8000MVRT4UXLN uses a hardwired connection (L1, L2, N, G) rather than discrete receptacles, which suits installations where the UPS feeds a downstream PDU or is permanently wired into a sub-panel. Output is user-configurable between 120V/208V and 120V/240V — a flexibility point not present in the APC spec. Interface options listed for the Vertiv include a serial port, USB, and a network RJ-45 port (via RDU101 card).
The APC unit confirms web-based management in its provided specs; the Vertiv lists a network RJ-45 interface (RDU101) but does not further describe web management capabilities within the provided data. EPO availability, audible alarms, and management software details are not specified in the Vertiv's provided specs, so those cannot be compared directly.
Which should you choose: the SRT8KRMXLT-IEC or the GXT5LI-8000MVRT4UXLN?
Our take: The SRT8KRMXLT-IEC is the stronger choice when output-connection flexibility and documented power-conditioning quality are the priority, while the GXT5LI-8000MVRT4UXLN is the stronger choice when Li-Ion battery chemistry, certified energy efficiency (Energy Star 2.0), and user-configurable output voltage are required. Key spec deltas: the APC unit documents a 2% output THD and a 100–275V input range, giving quantified output cleanliness and wide input tolerance not confirmed in the Vertiv specs; the Vertiv carries explicit Li-Ion certifications (UL 1642, UL 1973) and an Energy Star 2.0 listing absent from the APC's provided data; and the Vertiv's hardwired output with configurable 120V/208V or 120V/240V suits permanent sub-panel installations, whereas the APC's C13/C19 receptacles suit direct rack-equipment connections. Buyers prioritizing drop-in rack connectivity and proven input tolerance should favor the APC; those specifying Li-Ion longevity, energy-efficiency certification, or flexible output voltage configuration should favor the Vertiv.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | APC by Schneider Electric SRT8KRMXLT-IEC | Vertiv GXT5LI-8000MVRT4UXLN |
|---|---|---|
| UPS Topology | Double-Conversion (Online) | Double-Conversion Online |
| Output Capacity | 8 kVA / 8000 W | 8000 VA / 8000 W |
| Power Factor | 1.0 (8000W / 8000VA) | 1.0 (8000W / 8000VA) |
| Input Voltage Range | 100–275 V | 120V/240V (min/max not specified) |
| Input Frequency | 40–70 Hz | — |
| Output Voltage | 208 V | 120V/208V or 120V/240V (user-configurable) |
| Output Waveform | Sine | — |
| Output THD | 2% | — |
| Crest Factor | 3:1 | — |
| Surge Energy Rating | 480 J | — |
| Output Connections | C13 coupler, C19 coupler | Hardwired (L1, L2, N, G) |
| Management Interfaces | Web-based | Serial, USB, Network RJ-45 (RDU101) |
| Emergency Power Off (EPO) | Yes | — |
| Battery Chemistry | — | Li-Ion (UL 1642 / UL 1973 certified) |
| Energy Star | — | Energy Star 2.0 |
| Noise Level | 55 dB | — |
| Weight | — | 156.3 lbs |
| Dimensions (H×W×D) | — | 6.9 in × 16.9 in × 35 in |
| Operating Temperature | — | 32°F–104°F (0°C–40°C); 10% derate at 50°C |
| Safety Certifications | — | UL 1778, CSA 22.2 No. 107.3, c-UL, FCC Part 15 Class A |
Frequently Asked Questions
Which should you choose: the SRT8KRMXLT-IEC or the GXT5LI-8000MVRT4UXLN?
The SRT8KRMXLT-IEC is the stronger choice when output-connection flexibility and documented power-conditioning quality are the priority, while the GXT5LI-8000MVRT4UXLN is the stronger choice when Li-Ion battery chemistry, certified energy efficiency (Energy Star 2.0), and user-configurable output voltage are required. Key spec deltas: the APC unit documents a 2% output THD and a 100–275V input range, giving quantified output cleanliness and wide input tolerance not confirmed in the Vertiv specs; the Vertiv carries explicit Li-Ion certifications (UL 1642, UL 1973) and an Energy Star 2.0 listing absent from the APC's provided data; and the Vertiv's hardwired output with configurable 120V/208V or 120V/240V suits permanent sub-panel installations, whereas the APC's C13/C19 receptacles suit direct rack-equipment connections. Buyers prioritizing drop-in rack connectivity and proven input tolerance should favor the APC; those specifying Li-Ion longevity, energy-efficiency certification, or flexible output voltage configuration should favor the Vertiv.
Is the SRT8KRMXLT-IEC or GXT5LI-8000MVRT4UXLN better for racks with mixed IEC-corded servers and PDUs?
The SRT8KRMXLT-IEC is better suited for that scenario: it provides C13 and C19 IEC output receptacles, allowing direct connection of IEC-corded equipment. The GXT5LI-8000MVRT4UXLN uses a hardwired (L1, L2, N, G) output, which means it must feed a downstream PDU or be wired into a panel — it does not offer discrete IEC receptacles per the provided specifications.
Does either UPS use a lithium-ion battery, and why does that matter?
The Vertiv GXT5LI-8000MVRT4UXLN is confirmed to use a Li-Ion battery, as evidenced by its UL 1642 (Li-Ion battery cells) and UL 1973 (Li-Ion battery pack with UPS) certifications listed in the provided specs. Li-Ion batteries typically offer longer service life, lighter weight, and tolerance for higher ambient temperatures compared to VRLA alternatives. The battery chemistry of the APC SRT8KRMXLT-IEC is not stated in the provided specifications, so a direct chemistry comparison cannot be made.
Which unit is better for sites with poor or variable utility power quality?
The APC SRT8KRMXLT-IEC specifies an input operating range of 100–275V and an input frequency window of 40–70Hz, indicating strong tolerance for voltage sags, swells, and frequency variation without switching to battery. The Vertiv GXT5LI-8000MVRT4UXLN lists an input voltage range of 120V/240V but does not specify minimum/maximum voltage tolerance limits in the provided data, so its precise tolerance for poor utility power cannot be quantified from the available specs.
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