Eaton T20P11S05CUNV Transformer - 5 kVA DS-3
Part Number: T20P11S05CUNV
Quick Summary
The Eaton T20P11S05CUNV Transformer provides reliable, dry-type voltage transformation for distribution panels. In restricted spaces, heat buildup and dust exposure can drive maintenance costs and downtime. Industry standards often require CE marking, UL recognition, and appropriate enclosure IP ratings; confirm specifics with Eaton to ensure compliance. The totally enclosed non-ventilated design reduces dust ingress, suppresses external cooling needs, and simplifies installation in control cabinets and machine enclosures. With a 5 kVA rating and DS-3 configuration, it delivers scalable power for industrial automation and manufacturing environments, enabling safer operation and predictable performance for critical loads. This unit supports compact layouts while maintaining robust voltage regulation and rugged durability.
Product Information
Extended Description
T20P11S05CUNV 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, 5 kVA, Cu windings, Frame: 815N
Product Name
Eaton Totally enclosed non-ventilated transformer
Catalog Number
T20P11S05CUNV
UPC
786680094279
Product Length/Depth
15.82 in
Product Height
30.25 in
Product Width
16.87 in
Product Weight
202 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
815N
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
5 kVA
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
150 °C rise
Feature: 5 kVA dry-type transformer with copper windings. Business Impact: High electromechanical efficiency and reliable current handling reduce energy losses and prolong service life. Application: Control panels, automation racks, and small machine stations in manufacturing facilities. The copper windings enhance thermal performance and durability under continuous duty. Feature: Flexible primary and secondary voltages. Business Impact: Seamless integration with existing power rails (240/480 V to 120/240 V) minimizes wiring changes and installation time. Application: Powering mixed-control loads and subcircuits in industrial automation environments. Feature: Voltage taps for regulation. Business Impact: Multiple taps (+5%, -5%, +2.5%, -2.5%) allow precise voltage tuning under fluctuating loads, improving equipment performance. Application: Sensitive electronics and control systems in production lines. Feature: Totally enclosed non-ventilated enclosure. Business Impact: Dust ingress protection and reduced maintenance overhead, with simpler installation in tight spaces. Application: Panelboards, control cabinets, and switchgear in harsh factory settings. Feature: Single-phase 60 Hz operation. Business Impact: Direct compatibility with standard North American power distribution, reducing interface issues. Application: Industrial automation and equipment bays designed for 120/240 V control power. Feature: Frame 815N and weight 202 lb. Business Impact: Manageable weight and footprint enable easier installation and mounting in existing racks or enclosures. Application: Retrofit projects and new installations in space-constrained environments. Feature: Temperature rise 150 °C. Business Impact: High thermal tolerance supports reliability in hotter plant areas and dense-load scenarios. Application: Environments with elevated ambient temperatures or limited cooling. Feature: Warranty and support terms. Business Impact: Clear coverage reduces long-term maintenance risk and supports lifecycle budgeting. Application: Procurement planning and service planning for facilities and OEM integrations.
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FAQs
The unit is a 5 kVA, single-phase, dry-type transformer with a compact footprint (frame 815N, 202 lb). It fits standard panel enclosures and requires space for mounting and routing of primary and secondary leads. Ensure adequate clearance for cooling within the enclosure and follow local electrical codes during installation.
Key specs include 5 kVA rating, single-phase operation, primary voltages of 240 V and 480 V, secondary voltages of 120/240 V, copper windings, 60 Hz, and a 150 °C rise. Voltage taps are available for +5% and -5% and ±2.5% adjustments to fine-tune output under load.
Yes. The DS-3 design denotes a dry-type, compact transformer suitable for distribution in control panels, automation cabinets, and machine enclosures. Its totally enclosed non-ventilated (UNV) construction supports installation in dirty or restricted spaces with minimal cooling requirements.
Certification details for this model are provided by the manufacturer. Common industry verifications to confirm with Eaton include CE marking and UL recognition, along with enclosure rating specifics. Always request the latest certificate documentation or a formal confirmation from Eaton for compliance in your region.
The 5 kVA dry-type design reduces maintenance complexity by eliminating fans and vents, while copper windings improve efficiency and heat performance. A smaller footprint with dust-resistant enclosure lowers service intervals and supports longer intervals between calibrations, contributing to lower lifecycle costs in automation and manufacturing environments.