Eaton T20P11S50NV Transformer - UL Listed, 50 kVA
Part Number: T20P11S50NV
Quick Summary
The Eaton T20P11S50NV totally enclosed non-ventilated transformer provides reliable 50 kVA distribution for commercial and light industrial applications. End-users often face dust ingress, moisture, and heat that shorten service life and raise maintenance costs; this enclosure minimizes ingress and reduces downtime. UL Listed certification supports safety, while the DS-3 dry-type design aligns with indoor power distribution standards. This model pairs robust protection with versatile voltage taps and a compact frame, delivering predictable performance for industrial automation, manufacturing, and facilities power distributions.
Product Information
Extended Description
T20P11S50NV 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, 50 kVA , Frame: 820N, Al windings
Product Name
Eaton Totally enclosed non-ventilated transformer
Catalog Number
T20P11S50NV
UPC
786680023194
Product Length/Depth
23.84 in
Product Height
42.03 in
Product Width
24.22 in
Product Weight
648 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
UL Listed
Catalog Notes
Totally enclosed non-ventilated DS-3 or DT-3
Coil material
Aluminum
Design
DS-3
Frame
820N
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
50 kVA
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
150 °C rise
Totally enclosed non-ventilated DS-3 design protects windings from dust and moisture, reducing maintenance and extending service intervals. It also minimizes cooling requirements in indoor environments while preserving reliability in hot plants. The 50 kVA, single-phase configuration with primary 240/480 V and secondary 120/240 V provides scalable power for distribution panels and automation equipment, enabling straightforward integration with common plant electrical systems. Voltage taps at +5% FCAN, -5% FCBN and additional ±2.5% options allow precise voltage regulation to sensitive loads, reducing nuisance trips and improving downstream drive performance. Aluminum windings offer corrosion resistance and ruggedness, while the 820N frame and a 648 lb footprint support durable installation in demanding facilities. UL Listed certification confirms safety compliance and a 150°C rise margin supports continuous operation in challenging environments. Dimensions of 23.84 in L, 24.22 in W, and 42.03 in H enable compact panel integration with Eaton accessory compatibility. Warranty coverage under Eaton policies provides procurement and maintenance teams with peace of mind during deployment and life-cycle management.
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FAQs
This unit is designed for indoor dry environments and uses a totally enclosed non-ventilated DS-3 enclosure, which minimizes dust and moisture ingress. Plan for a stable mounting surface, access for wiring, and required clearance around the 23.84 in L x 24.22 in W x 42.03 in H footprint. The transformer weighs 648 lb, so include appropriate hoisting and support hardware as part of your installation plan. Tie-downs, vibration isolation, and compatibility with standard Eaton mounting accessories enhance reliability in facilities and manufacturing floors.
The transformer provides 50 kVA, single-phase, with primary voltages of 240 V and 480 V and secondary voltages of 120/240 V. Taps are available at 1 at +5% FCAN, 2 at -5% FCBN, and 2 at +2.5% FCAN with 4 at -2.5% FCBN, enabling voltage regulation to match supply swings and maintain downstream equipment performance.
The T20P11S50NV is specified as a dry-type, totally enclosed non-ventilated unit intended for indoor deployment. While the enclosure provides ingress protection against dust and moisture, it is not rated for continuous outdoor exposure unless installed in a protected, climate-controlled space or within a compliant outdoor-rated enclosure as part of a broader system.
Eaton provides warranty coverage under policy 25-000, offering one year from date of installation or 18 months from shipment, whichever occurs first. This aligns with typical utility and industrial project timelines and supports maintenance planning, spare parts stocking, and service eligibility.
The product is UL Listed, confirming compliance with safety standards. The design is DS-3 dry-type with aluminum windings and a robust 150°C rise rating, suitable for controlled indoor environments and typical facility electrical distributions. Use within approved panels and according to Eaton installation guides ensures compliant operation and long-term reliability.