Eaton T20P11F50CUNV Transformer - 50 kVA UL Listed
Part Number: T20P11F50CUNV
Quick Summary
Eaton T20P11F50CUNV transformer delivers reliable dry-type power distribution for 50 kVA single-phase applications. In tight spaces and demanding environments, vented units can overheat and require frequent maintenance, hampering uptime. UL Listed safety certification underpins code-compliant installations and safer operation across industrial sites. The DS-3 design with copper windings enables efficient performance, while the compact footprint and standard frame support straightforward installation in urban plants or manufacturing lines. With a 240/480 V primary and 120/240 V secondary, this transformer aligns with modern distribution schemes, helping engineers minimize spare-part variety and simplify procurement while maintaining robust electrical safety.
Product Information
Extended Description
T20P11F50CUNV 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, 115°C, 50 kVA , Cu windings, Frame: 820N
Product Name
Eaton Totally enclosed non-ventilated transformer
Catalog Number
T20P11F50CUNV
UPC
786680094620
Product Length/Depth
23.84 in
Product Height
42.03 in
Product Width
24.22 in
Product Weight
793 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
Coil material
Copper
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
115 °C rise
Feature → Business Impact → Application: Totally enclosed non-ventilated (TENV) design protects copper windings and core from dust and moisture, reducing maintenance cycles and extending service life in harsh plant environments. This translates to lower total cost of ownership and fewer unplanned outages for manufacturing lines and data centers that require reliable, low-maintenance distribution. Feature → Application: Copper windings deliver lower resistance losses and improved thermal performance, boosting overall efficiency and reducing cooling requirements in continuous-operation scenarios. This is especially valuable for high-throughput facilities where every watt saved lowers energy bills and improves reliability in critical processes. Feature → Application: Tap-changing capability (1 at +5% FCAN, 2 at -5% FCBN, 2 at +2.5% FCAN, 4 at -2.5% FCBN) provides precise voltage regulation to compensate for line drop and loading variations, decreasing secondary-side voltage excursions and protecting sensitive equipment. Feature → Application: Primary 240/480 V and secondary 120/240 V provide flexible connectivity for common industrial power systems, enabling straightforward integration into existing distributions and simplifying configurations for single-phase supply. Feature → Application: DS-3 design and a robust 820N frame with a compact footprint (23.84 in L × 24.22 in W × 42.03 in H) deliver a durable, space-efficient solution for panelboards, switchgear rooms, and service centers. Feature → Application: UL Listed certification and a one-year (or 18 months from shipment) Eaton warranty provide compliance confidence and predictable maintenance planning, while the unit’s rugged construction supports long intervals between service events in busy facilities.
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FAQs
Plan for a clean indoor environment with adequate clearance around the unit. The transformer is a dry-type, totally enclosed design with a footprint of 23.84 in L by 24.22 in W and 42.03 in H, weighing about 793 lb. Ensure proper mounting, access for taps, and that ambient conditions stay within typical dry-type rating limits. Wiring should follow 60 Hz, 240/480 V primary and 120/240 V secondary connections, with UL Listed compliance verified during commissioning.
The unit features multiple taps: 1 at +5% FCAN, 2 at -5% FCBN, and 2 at +2.5% FCAN, plus 4 at -2.5% FCBN. This allows on-site voltage adjustment to compensate for line drop or loading changes, ensuring the secondary voltage remains within tolerance to protect connected equipment and maintain process stability. This reduces the need for external regulators and minimizes downtime caused by voltage excursions.
Yes. This is a single-phase, 50 kVA dry-type distribution transformer with a 240/480 V primary and 120/240 V secondary, designed for indoor electrical distribution in industrial settings. Its DS-3 design and copper windings offer reliable performance at 60 Hz, with a compact footprint that fits standard electrical rooms and panelboards, supporting scalable distribution as plant loads grow.
The transformer is UL Listed, providing assurance of safety and compliance with electrical codes during installation and operation. UL certification supports safer commissioning, reduces regulatory risk, and helps streamline inspections. Always verify local code requirements and maintain documentation for the UL Listed status during audits and warranty validations.
Eaton provides a warranty per policy 25-000: one year from the date of installation or eighteen months from shipment, whichever occurs first. This unit’s rugged dry-type construction minimizes maintenance intervals, while the UL Listed certification and DS-3 design help ensure dependable performance. For maintenance planning, keep spare copper windings and taps accessible and schedule periodic inspections according to site conditions.