Eaton NT20P11F10CUNV Totally Enclosed Non-Ventilated Transformer - UL Listed
Part Number: NT20P11F10CUNV
Quick Summary
Eaton NT20P11F10CUNV transformer provides rugged, 10 kVA power isolation for control panels and enclosures. In harsh industrial settings, stray dust and heat can shorten transformer life; this totally enclosed non-ventilated design minimizes contamination and simplifies cooling. UL Listed safety certification accompanies the unit, reinforcing compliance in electrical assemblies. For panel builders and OEMs, the combination of rugged construction, accuracy, and straightforward taps supports faster installation and predictable performance. With copper windings, shielded design, and a 60 Hz rating, it delivers reliable control-power. This makes it well suited for industrial automation, machinery safeguarding, and panel integration projects where space is at a premium. The compact footprint and weight further support installation in tight enclosures with standard mounting.
Product Information
Extended Description
NT20P11F10CUNV Eaton: 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
Product Name
Eaton Totally enclosed non-ventilated transformer
Catalog Number
NT20P11F10CUNV
UPC
786680071416
Product Length/Depth
18.39 in
Product Height
31.3 in
Product Width
22.89 in
Product Weight
302 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
Coil material
Copper
Design
K-13
Frame
816N
Tap size
1 at +5% FCAN, 2 at -5% FCBN x 2 at +2.5% FCAN, 4 at -2.5% FCBN
Type
Non-ventilated transformer
Frequency rating
60 Hz
Kva Rating
10 kVA
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
115 °C rise
Special features
Electrostatically shielded
The enclosure design of the NT20P11F10CUNV provides a rugged, dust-resistant platform that minimizes maintenance and extends service life in dirty or hot environments, improving uptime for control systems and machine enclosures. Copper windings coupled with an electrostatic shield reduce stray losses and EMI, enhancing reliability and safety for nearby automation equipment while helping maintain voltage integrity. The K-13 design and 60 Hz operation ensure stable performance across typical industrial power environments, even under demanding load conditions, which translates to fewer voltage fluctuations in control circuits and more consistent actuations. Tap settings offer voltage regulation flexibility to accommodate supply variations, reducing the risk of nuisance trips and enabling smoother machine starts. Dual primary and secondary voltages simplify wiring and stock management, lowering installation cost and accelerating panel assembly. The unit’s 18.39 in depth, 31.3 in height, 22.89 in width footprint and 302 lb mass provide a stable installation in standard cabinets, supporting quick mounting and alignment with existing conduits. UL Listed certification and Eaton’s warranty deliver peace of mind for asset owners, installers, and maintenance teams.
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FAQs
Plan for a sturdy, level mounting surface in an enclosure with adequate clearance for the 302 lb unit. Since it is totally enclosed non-ventilated, allow airspace around the cabinet only as required by the enclosure design. Ensure access to the taps and wiring knockouts, and provide proper grounding per your panel standards.
This is a 10 kVA, single-phase transformer with primary voltages of 240 V and 480 V and secondary voltages of 120/240 V. It operates at 60 Hz and uses copper windings with an electrostatic shield, offering reliable voltage conversion and EMI suppression for control circuits.
Yes. Its rugged, enclosed design with 60 Hz operation, 10 kVA rating, and dual voltage outputs makes it well suited for control panels, machine enclosures, and automation cabinets where steady power and protection from dust and contaminants are critical.
The transformer is UL Listed, confirming safety compliance for electrical equipment. It carries Eaton’s warranty policy of one year from installation or eighteen months from shipment, whichever occurs first, providing coverage for manufacturing defects and performance reliability.
Yes. The unit provides multiple tap options to accommodate voltage variations: 1 at +5% FCAN, 2 at -5% FCBN, 2 at +2.5% FCAN, and 4 at -2.5% FCBN. These settings help maintain output voltage within tolerance under fluctuating input conditions, reducing nuisance trips and improving control stability.