APC by Schneider Electric SRTL5KTF vs APC by Schneider Electric SRT5KRMTF: Specification Comparison
Both the SRTL5KTF and SRT5KRMTF are APC by Schneider Electric 5 kVA step-down isolation transformers designed to work in conjunction with Smart-UPS systems, converting higher-voltage (208 V) input to 120 V output for downstream equipment. Neither unit is a standalone UPS. This comparison examines their form factor and mounting options, input/output voltage flexibility, outlet configurations, and physical characteristics to help installers and IT buyers select the right transformer for their rack or tower deployment.
In This Guide
Which transformer offers broader input and output voltage flexibility?
The SRTL5KTF accepts two distinct input voltages — 208 V and 240 V — giving installers flexibility when connecting to varied facility power sources. Its output is equally broad, delivering 120 V, 208 V, and 240 V simultaneously across its outlet bank, making it suitable for mixed-voltage equipment environments.
The SRT5KRMTF is specified with a single input voltage of 208 V only. Its output is listed as 120 V only. No additional output voltages are specified in the provided data. Buyers who need 208 V or 240 V output, or who must connect to a 240 V input source, will not find that capability documented for the SRT5KRMTF.
How do the form factor and mounting options differ between the two units?
The SRTL5KTF is a tower-format unit with a single dimension listed at 17.01 in (43.2 cm). It supports rack mounting with an optional kit and carries no preference for mounting orientation per spec. It weighs 125.00 lb (56.7 kg), making it among the heavier options in its class and a meaningful factor for floor or shelf placement.
The SRT5KRMTF is a dedicated 2U rackmount unit measuring 3.50 in (8.9 cm) in height and is designed for horizontal front-mounting in a standard rack. At 95.00 lb (43.09 kg), it is 30 lb lighter than the SRTL5KTF, which eases rack integration and reduces structural load. For environments with existing rack infrastructure, the SRT5KRMTF's native 2U rackmount form is a direct fit without additional kits.
Which unit provides more outlet variety and what load ratings are documented?
The SRTL5KTF provides 12 outlets across four receptacle types: (8) NEMA 5-20R, (2) NEMA L6-20R, (1) NEMA L6-30R, and (1) NEMA L14-30R. This mixed outlet bank supports both standard 120 V loads and higher-voltage 208 V/240 V equipment simultaneously. No max line current or input current limit is specified in the provided data.
The SRT5KRMTF provides 12 outlets of a single type: (12) NEMA 5-20R, all delivering 120 V output. This uniform outlet bank suits environments where all downstream equipment runs on standard 120 V. The SRT5KRMTF additionally specifies a max line current of 24 A and an input current limit of 30 A, and a load capacity of 5,000 VA — figures not provided for the SRTL5KTF in the available spec data.
Which should you choose: the SRTL5KTF or the SRT5KRMTF?
Our take: The SRTL5KTF is the stronger choice when the installation requires dual input voltage compatibility (208 V or 240 V) and mixed output voltages (120 V, 208 V, and 240 V) to serve a heterogeneous equipment mix. Its four outlet types — including NEMA L6-20R, L6-30R, and L14-30R — provide coverage the SRT5KRMTF cannot match on 120 V-only, NEMA 5-20R-only terms. Conversely, the SRT5KRMTF is the better fit for a standard rack deployment: it is 30 lb lighter (95 lb vs. 125 lb), occupies a native 2U horizontal slot without adapter kits, and its documented 24 A max line current and 30 A input limit give installers explicit current-budget figures. Choose the SRTL5KTF for mixed-voltage data center or lab environments; choose the SRT5KRMTF for uniform 120 V rackmount deployments where weight and defined current limits matter.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | APC by Schneider Electric SRTL5KTF | APC by Schneider Electric SRT5KRMTF |
|---|---|---|
| SKU | SRTL5KTF | SRT5KRMTF |
| Capacity | — | 5,000 VA |
| Main Input Voltage | 208 V, 240 V | 208 V |
| Main Output Voltage | 120 V, 208 V | 120 V |
| Other Output Voltage | 240 V | — |
| Input Connection | NEMA L6-30P | NEMA L6-30P |
| Max Line Current | — | 24 A |
| Input Current Limit | — | 30 A |
| Form Factor | Tower (rack-mountable with kit) | 2U Rackmount |
| Rack Units | — | 2U |
| Mounting Position | — | Horizontal |
| Weight | 125.00 lb (56.7 kg) | 95.00 lb (43.09 kg) |
| Dimension (listed) | 17.01 in (43.2 cm) | 3.50 in (8.9 cm) |
| Outlet Types & Count | (8) NEMA 5-20R, (2) NEMA L6-20R, (1) NEMA L6-30R, (1) NEMA L14-30R | (12) NEMA 5-20R |
| Total Outlets | 12 | 12 |
| Operating Altitude | 0–10,000 ft | 0–10,000 ft |
| Operating Relative Humidity | 0–95% non-condensing | 0–95% non-condensing |
| Storage Temperature | 5–113 °F (−15–45 °C) | 5–113 °F (−15–45 °C) |
| Storage Altitude | 0–50,000 ft (0–15,240 m) | 0–50,000 ft (0–15,240 m) |
| Color | Black | Black |
| Cable Length | 3 ft (0.91 m) | — |
| Number of Cables | 1 | 1 |
Frequently Asked Questions
Which should you choose: the SRTL5KTF or the SRT5KRMTF?
The SRTL5KTF is the stronger choice when the installation requires dual input voltage compatibility (208 V or 240 V) and mixed output voltages (120 V, 208 V, and 240 V) to serve a heterogeneous equipment mix. Its four outlet types — including NEMA L6-20R, L6-30R, and L14-30R — provide coverage the SRT5KRMTF cannot match on 120 V-only, NEMA 5-20R-only terms. Conversely, the SRT5KRMTF is the better fit for a standard rack deployment: it is 30 lb lighter (95 lb vs. 125 lb), occupies a native 2U horizontal slot without adapter kits, and its documented 24 A max line current and 30 A input limit give installers explicit current-budget figures. Choose the SRTL5KTF for mixed-voltage data center or lab environments; choose the SRT5KRMTF for uniform 120 V rackmount deployments where weight and defined current limits matter.
Can either transformer accept a 240 V input from the facility?
Only the SRTL5KTF lists 240 V as a supported input voltage. The SRT5KRMTF specifies 208 V input only per the provided specifications. If your facility feeds 240 V, the SRTL5KTF is the documented-compatible choice.
Which unit is easier to install in a standard equipment rack?
The SRT5KRMTF is the native rackmount unit, occupying 2U in a horizontal front-mount configuration with no additional kit required. The SRTL5KTF is a tower unit that supports rack mounting only with an optional kit, and at 125 lb versus the SRT5KRMTF's 95 lb, it also places a greater structural demand on rack rails.
Do both units support the same operating environment conditions?
Yes. Both units share identical environmental ratings per the provided specs: 0–95% relative humidity (non-condensing) in operation and storage, operating altitude 0–10,000 ft, storage altitude 0–50,000 ft (0–15,240 m), and storage temperature 5–113 °F (−15–45 °C). Neither has a documented operating temperature range in the supplied spec data.
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