Eaton T20P11S25NV Totally Enclosed Transformer - DS-3
Part Number: T20P11S25NV
Quick Summary
Eaton T20P11S25NV is a totally enclosed non-ventilated transformer for dry-type distribution use. When space is tight and moisture or venting concerns threaten uptime, this unit delivers a robust, maintenance-friendly solution. Typical CE and UL safety certifications and IP-rated enclosures are common in this class; confirm exact approvals (SIL, CE, IP) with Eaton. In practice, it supports a compact footprint, aluminum windings for reliability, and selectable taps to optimize voltages across distribution panels—driving efficiency and scalable power delivery. With a 25 kVA rating, 60 Hz operation, and a 150°C rise, it delivers resilience in commercial and industrial environments, featuring DS-3 design and frame 818N.
Product Information
Extended Description
T20P11S25NV Eaton: General-Purpose Transformer, Ventilated, Dry Type Distribution, Frame: 818N, 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
Product Name
Eaton Totally enclosed non-ventilated transformer
Catalog Number
T20P11S25NV
UPC
786685197562
Product Length/Depth
20.36 in
Product Height
37.59 in
Product Width
22.89 in
Product Weight
386 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
Aluminum
Design
DS-3
Frame
818N
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
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
150 °C rise
Feature: 25 kVA single‑phase transformer with adaptable primary voltages of 240 V or 480 V and a 120/240 V secondary. Business Impact: This versatility reduces panel inventory and simplifies field installations by accommodating regional grid configurations, cutting downtime during commissioning. Application: Best suited for dry-type distribution in control panels, switchgear, and machine centers. Paragraph 2: Feature: DS-3 design with a frame 818N and a totally enclosed non-ventilated enclosure. Impact: Offers rugged protection against dust, moisture, and incidental contact, minimizing environmental risk in indoor spaces. Application: Ideal for space-constrained panels in manufacturing facilities and data centers. Paragraph 3: Feature: Aluminum windings and a 150°C temperature rise. Impact: Aluminum windings enhance thermal performance and corrosion resistance, improving long-term reliability and reducing cooling requirements. Application: Suitable for continuous operation in moderate ambient temperatures and integral with dry-type distribution systems. Paragraph 4: Feature: Tap settings: 1 at +5% FCAN, 2 at -5% FCBN x 2 at +2.5% FCAN, 4 at -2.5% FCBN. Impact: Voltage regulation capability helps maintain downstream equipment performance despite line fluctuations, reducing nuisance trips. Application: Useful in installations with variable supply or long feeder runs. Paragraph 5: Feature: Warranty and service terms from Eaton policy 25-000. Impact: Provides clarity on post-install support and asset lifecycle. Application: Helps planning maintenance budgets and ROI calculations in industrial plants.
Get a Quick Quote for a Eaton T20P11S25NV
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton T20P11S25NV?
Enquire Now
FAQs
The T20P11S25NV is designed for DS-3 frame 818N installations, supporting single‑phase 25 kVA service with primary options of 240 V or 480 V and secondary 120/240 V. Ensure mounting in a suitable indoor enclosure, verify adequate clearance for ventilation (if applicable), and confirm primary/secondary terminations align with your panel busbar layout and wiring methods.
Key specs include 25 kVA rating, 60 Hz frequency, single-phase design, primary voltage 240 V and 480 V, secondary 120/240 V, aluminum windings, and a 150°C temperature rise. The transformer features taps at varying percentages to help regulate voltage, and a frame 818N with a DS-3 design for rugged indoor use.
Yes. Its totally enclosed non-ventilated DS-3 design and frame 818N provide robust protection in compact enclosures. With dimensions around L 20.36 in, W 22.89 in, H 37.59 in and a weight of 386 lb, it fits many space-constrained panels while delivering reliable distribution performance.
Certification details are provided by the manufacturer and can vary by region. Typical Eaton transformers align with regional safety programs (for example CE and UL marks) and enclosure ratings. Always verify the exact approvals for your installation with Eaton to ensure compliance with local electrical codes.
The warranty follows Eaton policy 25-000, offering one year from the date of installation or eighteen months from the date of shipment, whichever comes first. This coverage supports post-install maintenance decisions, asset lifecycle planning, and ROI projections for industrial power systems.