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Low-voltage transformers

Totally Enclosed Non-Ventilated transformers

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Totally Enclosed Non-Ventilated transformers

Totally enclosed non-ventilated transformers are highly suited for applications where the atmosphere contains conductive, corrosive, or combustible materials which might damage a transformer, or lint and dust which might block the ventilation passages. With no openings in the enclosure, heat is dissipated by radiating from the surface area of the enclosure.

Contact me about this product

Voltage class

600V

Ratings

Single-phase 15 - 167 kVA Three-phase 15 - 1000 kVA

Winding conductor

Aluminum or copper

Core features

Totally enclosed non-ventilated transformers are specifically excluded from the scope of U.S. DOE energy efficiency requirements
Standard NEMA 3R enclosure; optional 3RX, 4, 4X, and 12 (X suffix enclosures ratings made of stainless steel)
Includes copper or aluminum windings
Available in 80°, 115° and 150° C rise designs
Provides versatility for indoor/outdoor applications
Transformers include a versatile bonding/grounding bar affixed to the bottom panel as standard, to provide compliance with NEC 450.10(A)

View consulting application guide

Download Guide specification (16461)

Learn more about transformer family

Transformers Flex Center custom solutions

Learn how our Transformer Flex Center can help you meet unique general-purpose and distribution transformer needs that cannot be met with standard offerings

Watch the video

U.S. Department of Energy’s 2016 transformer efficiency changes

Discover the impact on inrush current for low-voltage dry-type transformers

Read white paper

Important aspects of dry-type distribution transformers

Explore best practices for the installation and inspection of dry-type distribution and power transformers

Read white paper

View consulting application guide

Download Guide specification (16461)

Learn more about transformer family

170 Results

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H48M28F15CUNV

Specifications
Resources

K-Factor Non Linear Transformer, Non-Ventilated, K-4, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 115°C, 15 kVA, Cu windings, Elec. Shield, Frame: 912BN

H48M28T45CUNV

Specifications
Resources

K-Factor Non Linear Transformer, Non-Ventilated, K-4, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 150°C, 45 kVA, Cu windings, Elec. Shield, Frame: 916AN

H48M28T75NV

Specifications
Resources

K-Factor Non Linear Transformer, Non-Ventilated, K-4, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 150°C, 75 kVA, Al windings, Elec. Shield, Frame: 916AN

H48M47T75CUNV

Specifications
Resources

K-Factor Non Linear Transformer, Non-Ventilated, K-4, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 480Y/277V, 150°C, 75 kVA, Cu windings, Elec. Shield, Frame: 916AN

MD118E73NV

Specifications
Resources

Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 460 delta, Taps: 1 at +5% FCAN, 1 at -5% FCBN, SV: 460 delta, 150°C, 11 kVA, Al windings, Frame: 917N

MD175E73NV

Specifications
Resources

Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 460 delta, Taps: 1 at +5% FCAN, 1 at -5% FCBN, SV: 460 delta, 150°C, 175 kVA, Al windings, Frame: 918AN

MD27D85NV

Specifications
Resources

Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 208V, Taps: 2 at +2.5% FCAN, 2 at -2.5% FCBN, SV: 230Y/133V, 150°C, 27 kVA, Al windings, Frame: 914DN

MD34E97NV

Specifications
Resources

Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 575 delta, Taps: 1 at +5% FCAN, 1 at -5% FCBN, SV: 480 delta, 150°C, 34 kVA, Al windings, Frame: 914DN

N39M28T12XCUNV

Specifications
Resources

Eaton Totally enclosed non-ventilated transformer K-Factor Non Linear Transformer, Ventilated, K-13, Three-phase, PV: 400V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 150°C, 112.5 kVA, Cu windings, Elec. Shield, Frame: 918AN

N48B28B15CUNV

Specifications
Resources

Eaton Totally enclosed non-ventilated transformer K-Factor Non Linear Transformer, Non-Ventilated, K-13, Three-phase, PV: 480V, Taps: 2 at -5% FCBN, SV: 208Y/120V, 80°C, 15 kVA, Cu windings, Elec. Shield, Frame: 915DN

N48B28B30CUNV

Specifications
Resources

K-Factor Non Linear Transformer, Non-Ventilated, K-13, Three-phase, PV: 480V, Taps: 2 at -5% FCBN, SV: 208Y/120V, 80°C, 30 kVA, Cu windings, Elec. Shield, Frame: 916AN

N48B28B45CUNV

Specifications
Resources

K-Factor Non Linear Transformer, Non-Ventilated, K-13, Three-phase, PV: 480V, Taps: 2 at -5% FCBN, SV: 208Y/120V, 80°C, 45 kVA, Cu windings, Elec. Shield, Frame: 916AN

N48D25F15CUNV

Specifications
Resources

Totally enclosed non-ventilated transformer, KT-13/DT-3E, Three-phase, Primary voltage: 480V, Taps: 2 at +2.5% FCAN, 2 at -2.5% FCBN, Secondary voltage: 220V, 115°C, 15 kVA, Cu windings, FR912BN, 599A, ES, 60 Hz, NEMA 3R

N48M28B15CUNV

Specifications
Resources

K-Factor Non Linear Transformer, Non-Ventilated, K-13, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 80°C, 15 kVA, Cu windings, Elec. Shield, Frame: 915DN

N48M28B49CUNV

Specifications
Resources

K-Factor Non Linear Transformer, Non-Ventilated, K-13, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 80°C, 150 kVA, Cu windings, Elec. Shield, Frame: 920NE

N48M28F45NV

Specifications
Resources

Eaton Totally enclosed non-ventilated transformer 45 KVA K13 TENV XFMR 3PH 480-208Y/120 115C RISE

N48M28F75NV

Specifications
Resources

Eaton Totally enclosed non-ventilated transformer 75 KVA K13 TENV XFMR 3PH 480-208Y/120 115C RISE

N48M28T15CUNV

Specifications
Resources

K-Factor Non Linear Transformer, Non-Ventilated, K-13, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 150°C, 15 kVA, Cu windings, Elec. Shield, Frame: 912BN

N48M28T30NV

Specifications
Resources

K-Factor Non Linear Transformer, Non-Ventilated, K-13, Three-phase, PV: 480V, Taps: 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 208Y/120V, 150°C, 30 kVA, Al windings, Elec. Shield, Frame: 914DN

NT20P11F10CUNV

Specifications
Resources

K-Factor Transformer, Ventilated, K-13, 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, 115°C, 10 kVA, Cu windings , Elec. Shield, Frame: 816N

NT20P11S15CUNV

Specifications
Resources

K-Factor Transformer, Ventilated, K-13, 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 , Elec. Shield, Frame: 817N

NT48M12S15CUNV

Specifications
Resources

Eaton Totally enclosed non-ventilated transformer, KT-13 (1-phase), PV 480V, Taps: 2 at +2.5% /4 at -2.5%, SV 120V, 150°C rise, 15 kVA, Copper windings, NV

NT48N11F15CUNV

Specifications
Resources

K-Factor Transformer, Ventilated, K-13, Single-phase, PV: 480V, Taps: None, SV: 120/240V, 115°C, 15 kVA, Cu windings , Elec. Shield, Frame: 817N

T10P48B05CUNV

Specifications
Resources

General-Purpose Transformer, Ventilated, Dry Type Distribution, DS-3, Single-phase, PV: 120 X 240V, Taps: 1 at +5% FCAN, 2 at -5% FCBN X 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 480 delta, 80°C, 5 kVA, Cu windings, Frame: 815N

T16P14S15CUNV

Specifications
Resources

General-Purpose Transformer, Ventilated, Dry Type Distribution, DS-3, Single-phase, PV: 220 X 440V, Taps: 1 at +5% FCAN, 2 at -5% FCBN X 2 at +2.5% FCAN, 4 at -2.5% FCBN, SV: 110/220V, 150°C, 15 kVA, Cu windings, Frame: 818N

T18P11S15NV

Specifications
Resources

General-Purpose Transformer, Ventilated, Dry Type Distribution, DS-3, Single-phase, PV: 208 X 416V, 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, Al windings, Frame: 817N

T20P11B15CUNV

Specifications
Resources

Totally enclosed non-vent. transformer, DS-3E, Single-phase, Prim. voltage: 240 x 480V, Taps: 1 at +5% FCAN, 2 at -5% FCBN x 2 at +2.5% FCAN, 4 at -2.5% FCBN, Sec. voltage: 120/240V, 80°C, 15 kVA, Cu windings, FR818N, 3XA, 60 Hz, NEMA 3R

T20P11B25CUESNV

Specifications
Resources

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, 80°C, 25 kVA, Cu windings, Elec. Shield, Frame: 819N

T20P11E25NV

Specifications
Resources

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, 25 kVA, Al windings, Elec. Shield, Frame: 818N

T20P11E50NV

Specifications
Resources

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, 50 kVA , Al windings, Elec. Shield, Frame: 820N

Download Links

Brochures

Dry type distribution transformer flex center line card

This document provides an overview of Eaton's low-voltage dry-type distribution transformers.

(PDF 1 MB, 3/31/2017)
Eaton’s low-voltage dry-type distribution transformers - built to meet the most demanding harsh and industrial environmental applications

This brochure contains information on Eaton’s LV dry-type harsh environment transformer offering

(PDF 733 KB, 7/1/2019)

Catalogs

Transformer consulting application guide

This design guide provides dimensions, layout examples, technical specifications and application information for low-voltage dry-type transformers.

(PDF 2 MB, 3/31/2017)
Transformer distribution catalog

This catalog contains product details and ordering information for Eaton’s low-voltage dry-type transformers.

(PDF 1 MB, 2/28/2018)

Installation instructions

Low-voltage dry-type distribution transformers installation, operation, and maintenance manual

This document contains operation and maintenance instructions for low-voltage dry-type distribution transformers.

(PDF 827 KB, 5/31/2018)

How to buy from Eaton

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Products
Low-voltage power distribution & control systems
Low-voltage transformers
Totally Enclosed Non-Ventilated transformers

Eaton is a power management company with 2018 sales of $21.6 billion. We provide energy-efficient solutions that help our customers effectively manage electrical, hydraulic and mechanical power more efficiently, safely and sustainably. Eaton is dedicated to improving the quality of life and the environment through the use of power management technologies and services. Eaton has approximately 100,000 employees and sells products to customers in more than 175 countries.

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Select your location

Africa

Asia

Central America and Caribbean

Europe

Middle East

North America

Oceania

South America

Totally Enclosed Non-Ventilated transformers

Core features

Transformers Flex Center custom solutions

U.S. Department of Energy’s 2016 transformer efficiency changes

Important aspects of dry-type distribution transformers

You may also be interested in

Brochures

Catalogs

Installation instructions

Let's talk big ideas