What does each unit actually do, and how do their power conversion and output specs compare?

The Vertiv GXT5-5000MVRT4UXLN is a self-contained on-line double-conversion UPS rated at 5,000 VA / 5,000 W (1.0 power factor). It accepts a typical input of 208 VAC with a range of 176–280 VAC and delivers a user-configurable 208/120 VAC output. In on-line mode it achieves up to 95% efficiency, rising to up to 98% in Active ECO Mode. This unit provides continuous power conditioning, battery backup, and surge protection in a single enclosure.

The APC SRTL5KTF is an isolation and step-down transformer, not a UPS. It converts 208 V or 240 V input down to 120 V, 208 V, or 240 V output and is rated for use with the APC Smart-UPS Ultra On-Line series. It carries no battery, no inverter, and no efficiency rating in the provided specs. Its role is to expand the outlet mix and voltage flexibility of a paired APC UPS — it cannot condition power or provide runtime on its own. A buyer who needs a standalone 5 kVA UPS must select the Vertiv (or a comparable standalone unit) and would then optionally add the SRTL5KTF downstream if 120 V NEMA outlets are also required.

Output receptacle counts differ sharply. The SRTL5KTF provides eight NEMA 5-20R, two NEMA L6-20R, one NEMA L6-30R, and one NEMA L14-30R — a rich mixed-voltage outlet panel suited to servers and network gear requiring both 120 V and 208 V. The GXT5-5000MVRT4UXLN is hardwired in and out with optional POD (Power Output Distribution) modules; specific receptacle counts are not listed in the provided specifications.

How do the two units compare on physical footprint, installation method, and management interfaces?

Physically the two units are close in weight: the SRTL5KTF is 125.00 lb (56.7 kg) and the GXT5-5000MVRT4UXLN is 125.6 lb. Dimensional data is more complete for the Vertiv: 6.8 in H × 16.9 in W × 25.6 in D. The APC transformer lists only one dimension — 17.01 in (43.2 cm) — without specifying which axis, so a direct rack-unit or depth comparison cannot be made from the provided specs. The Vertiv occupies approximately 4U in a rack; the APC spec sheet does not state a rack-unit height.

Installation approach also differs. The SRTL5KTF ships with a 3 ft (0.91 m) NEMA L6-30P input cable and is described as rack-mountable with an optional kit; it plugs into an upstream APC UPS output. The GXT5-5000MVRT4UXLN uses hardwired input and output connections, requiring a licensed electrician for installation but eliminating the plug/socket current-rating bottleneck.

Management capability is one-sided in the provided data. The Vertiv includes a factory pre-installed Vertiv RDU101 SNMP/Webcard, USB, RS485, RS232, a terminal block, and an external battery connector, with SNMP and web management active out of the box and a full-color gravity-sensing LCD on the front panel. The APC SRTL5KTF spec sheet lists no management interface, network card, or display — as expected for a passive transformer accessory.

What are the environmental operating limits and compliance certifications for each unit?

Operating temperature tolerance favors the APC transformer slightly on the upper end, though measurement methods differ. The SRTL5KTF lists only a storage temperature range of 5–113 °F (−15–45 °C) and operating relative humidity of 0–95% non-condensing; no operating temperature range is provided in the spec sheet for the transformer itself. The GXT5-5000MVRT4UXLN specifies an operating temperature of +32 to +104 °F (0 to 40 °C) — a standard data-center envelope.

Altitude ratings are documented only for the APC unit: 0–10,000 ft operating and 0–50,000 ft storage. The Vertiv spec sheet does not list an altitude rating in the provided data. For installations at elevation — high-altitude data centers or mountain-region sites — the SRTL5KTF provides a confirmed 10,000 ft operating ceiling; the Vertiv's limit is unspecified from the supplied specs.

Compliance certifications are documented only for the Vertiv: ENERGY STAR 2.0, UL 1778, c-UL, RoHS2, and REACH. The APC SRTL5KTF spec sheet provides no certification listings in the supplied data. Buyers in regulated industries or those requiring ENERGY STAR documentation for rebates or procurement compliance should note that only the Vertiv carries those certifications as stated.

Which should you choose: the SRTL5KTF or the GXT5-5000MVRT4UXLN?

Our take: The GXT5-5000MVRT4UXLN is the stronger choice when a buyer needs a self-contained 5 kVA on-line UPS, because the SRTL5KTF is a transformer accessory, not a UPS. The Vertiv delivers a rated 5,000 VA / 5,000 W at 1.0 power factor with up to 98% efficiency in ECO mode versus no power-conversion capability at all from the APC unit. The Vertiv ships with a factory-installed SNMP/Webcard and full-color LCD for immediate network management; the SRTL5KTF lists no management interface. The Vertiv carries ENERGY STAR 2.0, UL 1778, and RoHS2 certifications; no certifications are listed for the SRTL5KTF. The correct comparison is a system-level one: the SRTL5KTF adds downstream 120 V NEMA outlet density (8 × NEMA 5-20R plus mixed 208 V receptacles) to an APC Smart-UPS Ultra On-Line host unit. Buyers on a Vertiv platform have no use for the SRTL5KTF; buyers already invested in APC Smart-UPS Ultra On-Line infrastructure should evaluate it as an outlet-expansion transformer, not as a competing UPS.

Side-by-Side Comparison

Spec-for-spec, from manufacturer data.

Frequently Asked Questions

Related Resources

• APC by Schneider Electric SRTL5KTF product page — full specs and to add to a quote
• Vertiv GXT5-5000MVRT4UXLN product page — full specs and to add to a quote