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APC – SRT5KTF – Isolation Step-Down Transformer – Tested

Manufacturer

OEM Part Number

SRT5KTF

GPS Part Number

SRT5KTF

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Price:

$1,128.99

Specifications
View Spec Sheet
Voltage AH/kVA Length Width Height Weight
170-280VAC 4,800 W 5.12in 17.01in 26.00in 125.0lb
Voltage 170-280VAC
Amp/H 4,800 W
Length 5.12in
Width 17.01in
Height 26.00in
Weight 125.0lb

APC Smart-UPS — Isolation Step-Down Transformer (SRT5KTF)

This is the Tested Version.

SKU: APC-SRT5KTF  |
Type: Tower/Rack Isolation & Step-Down transformer (208/240 V in → 120/208 V out, with 240 V pass-through). 12 total outlets:
8 × NEMA 5-20R, 2 × NEMA L6-20R, 1 × NEMA L6-30R, 1 × NEMA L14-30R. Input: NEMA L6-30P locking plug, 3 ft (0.9 m) cord.

  • Outlet mix: 8Ă— 5-20R (accepts 5-15P/5-20P), 2Ă— L6-20R, 1Ă— L6-30R, 1Ă— L14-30R (12 total).
  • Input: 208/240 V single-phase via L6-30P; 1 cord, 3 ft (0.9 m); 50/60 Hz.
  • Capacity: 4,800 VA / 4.8 kW (5 kVA class).
  • Isolation capability: Functions as a step-down or an isolation transformer for noise reduction and neutral reference.
  • Rack/tower: Tower or 19″ rack (requires APC rail kit SRTRK2 for rack mount).

Technical Specifications — SRT5KTF
Parameter Detail
Product Type Smart-UPS Isolation / Step-Down Transformer (Tower/Rack)
Nominal Input Voltage 208 V / 220 V / 240 V (selector switch)
Input Voltage Range 170–280 VAC
Input Connection NEMA L6-30P; 1 cord; 3 ft (0.9 m)
Output Voltages 120 V / 208 V (plus 240 V via dedicated receptacle)
Output Receptacles 8Ă— 5-20R; 2Ă— L6-20R; 1Ă— L6-30R; 1Ă— L14-30R (12 total)
Maximum Output Power 4,800 VA / 4,800 W
Input / Line Frequency 50/60 Hz
Dimensions (H×W×D) 5.12 × 17.01 × 26.00 in (130 × 432 × 660 mm)
Net Weight 125.0 lb (56.7 kg)
Mounting Tower or rack (install directly above UPS in rack; rail kit SRTRK2 required)
Included User manual
Environment Operating: 32–104 °F (0–40 °C), 0–95% RH (non-condensing); Altitude: 0–10,000 ft
Storage: 5–113 °F (−15–45 °C), 0–95% RH; Altitude: 0–50,000 ft
Warranty (mfr.) 2-year repair or replace

Notes & Replacement

SRT5KTF can operate as a step-down or isolation transformer. Set the rear input-voltage selector (208/240 V) to match the utility/UPS output.
For rack installs, mount the transformer directly above the UPS and use APC rail kit SRTRK2. For a non-isolation 5 kVA step-down with all 120 V outlets, see SRT5KRMTF.

Product Options — Tested vs. Refurbished Transformers
Option Description Warranty
Tested Input selector, breakers, and all receptacles verified under load; cord/plug inspected. 90‑Day
Refurbished Cleaned and serviced; cosmetic touch-ups as needed; full distribution & breaker re-test after service. 1‑Year

    • Use case: Feed 120 V and select 208/240 V loads from a 208/240 V UPS or utility feed.
    • Installation: Tower or 19″ rack; mount above the UPS; group loads by receptacle type.
    • Isolation benefit: Reduces common-mode noise and establishes a neutral reference for 120 V IT gear.

Compatibility & Variants Matrix
Model Input / Plug Outputs Typical Use / Notes
SRT5KTF 208/240 V / NEMA L6-30P (3 ft cord) 8× 5-20R; 2× L6-20R; 1× L6-30R; 1× L14-30R; 4,800 VA Isolation + step-down; tower or rack (SRTRK2); mount above UPS.
SRT5KRMTF 208 V / NEMA L6-30P 12× 5-20R on four branches Step-down (non-isolation); all 120 V outlets for dense loads.
AP9626 / AP9627 208/200 V / NEMA L6-30P AP9626: 12× 5-20R  |  AP9627: 4× L5-20R Legacy 5 kVA step-down modules with straight-blade or twist-lock mixes.

 

Why buy from Gruber
  • Professionally tested — Selector, breakers, and all outlets confirmed under load.
  • Exact fit hardware — Ready for tower or rack installs with the correct rail kit guidance.
  • Data-center friendly — Locking L6-30P input and mixed-type outputs to match real-world racks.
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