Eaton T20P11S15CUNV Transformer - DS-3
Part Number: T20P11S15CUNV
Quick Summary
The Eaton T20P11S15CUNV transformer provides reliable dry-type distribution for industrial power systems and control panels. Engineers struggle with bulky footprints, ventilation costs, and coil failures in aging units. In this model, Eaton lists Certifications as 'Contact Manufacturer,' and in practice CE marking, IP ratings, and SIL considerations are typical for plant-wide compliance—verify with the manufacturer for exact status. With a 15 kVA rating, single-phase operation, and copper windings, this transformer delivers efficiency and reliability in a compact footprint, helping you optimize space, reduce maintenance, and simplify procurement for indoor electrical rooms and equipment enclosures. This combination supports safer installation and faster commissioning in busy facilities.
Product Information
Extended Description
T20P11S15CUNV Eaton: General-Purpose Transformer, Ventilated, Dry Type Distribution, DS-3, Single-phase, PV: 240 X 480V, Taps: 1 at +5% FCAN, 2 at -5% FCBN X 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 120/240V, 150°C, 15 kVA, Cu windings, Frame: 817N
Product Name
Eaton Totally enclosed non-ventilated transformer
Catalog Number
T20P11S15CUNV
UPC
786685267326
Product Length/Depth
19.5 in
Product Height
37.53 in
Product Width
22.59 in
Product Weight
379 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
Contact Manufacturer
Catalog Notes
Totally enclosed non-ventilated DS-3 or DT-3
Coil material
Copper
Design
DS-3
Frame
817N
Tap size
1 at +5% FCAN, 2 at -5% FCBN x 2 at +2.5% FCAN, 4 at -2.5% FCBN
Type
Dry Type Distribution Transformer
Frequency rating
60 Hz
Kva Rating
15 kVA
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
150 °C rise
Commercial Distribution, Transformers, Volume 2, Tab 2
Eaton Specification Sheet - T20P11S15CUNV
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: Dry-type, totally enclosed non-ventilated DS-3 construction with copper windings. Business Impact: enhanced indoor safety, reduced cooling requirements, and longer service life. Application: ideal for control panels and equipment rooms in manufacturing facilities. Feature: 15 kVA single-phase rating with 60 Hz operation and dual primary voltages 240 V or 480 V, and a 120/240 V secondary. Business Impact: flexible voltage conversion and stable downstream power for sensitive electronics, enabling quick configuration for varied loads. Application: machine centers, panel boards, and process lines. Feature: Tap changer options 1 at +5% FCAN, 2 at -5% FCBN, and 4 at -2.5% FCAN/FCBN. Business Impact: voltage regulation without extra external hardware, reducing mismatch and nuisance faults. Application: sites with fluctuating supply or long feeder runs. Feature: Frame 817N and weight 379 lb. Business Impact: clear installation planning with compatible mounting, improving crane- or cabinet-based integration. Application: indoor installations in constrained spaces. Feature: Warranty terms Eaton Selling Policy 25-000—one year from installation or 18 months from shipment. Business Impact: predictable ownership costs and reliable service commitments. Application: procurement planning and long-term maintenance budgeting.
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FAQs
Install indoors in a dry location and use the DS-3 enclosure to ensure proper protection. The unit is a totally enclosed non-ventilated design with copper windings, so provide adequate mounting support for its 379 lb weight and the 817N frame. Plan for accessible voltage taps and safe clearance around the transformer for maintenance and cooling.
The transformer features 240 V or 480 V primary voltage options and a 120/240 V secondary. It operates at 60 Hz and is single-phase. Wire the primary to the chosen 240 V or 480 V source and connect the secondary to 120/240 V loads, using the built-in taps for voltage regulation as needed.
The catalog notes list Certifications as 'Contact Manufacturer,' so confirm exact compliance with your region's requirements. Common expectations for similar equipment include CE marking and IP-related protection, but verify the model-specific status with Eaton prior to procurement and installation.
The unit follows Eaton Selling Policy 25-000, offering a one-year warranty from the date of installation or 18 months from the date of shipment, whichever occurs first. This provides coverage for manufacturing defects and early-life performance, aiding in lifecycle planning and budget certainty.
Ideal for indoor service panels, control rooms, and machine areas in manufacturing, process, and facility infrastructure environments. Its 15 kVA single-phase rating, 240/480 V primary, 120/240 V secondary, and copper windings support reliable voltage conversion for sensitive electronics, with a compact DS-3 footprint suitable for space-constrained electrical rooms.