Eaton NT20P11S15CUNV Transformer - UL Listed
Part Number: NT20P11S15CUNV
Quick Summary
NT20P11S15CUNV transformer by Eaton delivers reliable single‑phase power for industrial distribution panels and control enclosures. For engineers facing limited space, the totally enclosed non‑ventilated design reduces ambient heat and fan noise, enabling safer operation in compact cabinets. UL Listed certification supports safety and compliance in critical electrical installations, including 60 Hz operation with a 15 kVA rating, copper windings, and an electrostatic shield. Designed for reliability in automation environments, it supports safe installation, long service life, and predictable maintenance cycles. This combination of robustness and compact footprint translates into lower downtime, easier retrofits, and improved energy efficiency across a range of industrial applications.
Product Information
Extended Description
NT20P11S15CUNV 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, 150°C, 15 kVA, Cu windings , Elec. Shield, Frame: 817N
Product Name
Eaton Totally enclosed non-ventilated transformer
Catalog Number
NT20P11S15CUNV
UPC
786680071423
Product Length/Depth
19.5 in
Product Height
37.53 in
Product Width
22.59 in
Product Weight
394 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
817N
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
15 kVA
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Temperature rise
150 °C rise
Special features
Electrostatically shielded
Feature: Totally enclosed non-ventilated construction reduces dust ingress and cooling requirements, which lowers maintenance costs and extends transformer life. Business Impact: Fewer filter changes and fan replacements translate to verified uptime and lower operating expenses. Application: Ideal for control panels and switchgear in harsh factory environments where ventilation is limited. Feature: K‑13 design with a 150°C temperature rise tolerance enhances insulation life and reliability under peak loads. Business Impact: Higher thermal resilience supports longer service intervals and reduced replacement costs. Application: Suitable for high‑demand automation lines where load surges are common. Feature: Copper windings deliver superior electrical conductivity and thermal performance. Business Impact: Lower resistance and improved efficiency reduce heat generation and energy waste. Application: Beneficial for precision drives and loads requiring clean voltage with minimal sag. Feature: 240/480 V primary with 120/240 V secondary and multiple taps (1 at +5% FCAN, 2 at −5% FCBN × 2 at +2.5% FCAN, 4 at −2.5% FCBN) provides flexible voltage regulation. Business Impact: Enables tighter voltage control and compatibility with diverse distribution systems. Application: Panels facing fluctuating mains in manufacturing or packaging lines. Feature: Frame 817N and compact footprint support straightforward mounting and enclosure fit. Business Impact: Simplified installation reduces labor time and improves cabinet organization. Application: Retrofit projects and new builds where space is constrained.
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FAQs
When planning installation, verify panel space for a 817N frame and ensure clearance for heat dissipation. The transformer supports 60 Hz operation with 240/480 V primary and 120/240 V secondary, with taps for voltage adjustment. Check enclosure NEMA ratings, conductors sized to 15 kVA loading, andWire protection for copper windings. This promotes safe, code‑compliant mounting in control panels and switchgear.
The 15 kVA rating defines the maximum apparent power the transformer can deliver continuously without overheating. At 60 Hz, the unit provides stable voltage conversion with copper windings, improving efficiency and reducing I²R losses compared with lower‑grade designs. This supports reliable drives, sensors, and automation controllers under typical industrial load profiles.
Yes. The NT20P11S15CUNV is well suited for single‑phase loads in machine tools, packaging lines, and panel switchgear. Its totally enclosed non‑ventilated construction helps keep dust out in harsh factory floors, while the 120/240 V secondary provides convenient low‑voltage distribution for controls. Its robust copper windings and shielding contribute to EMI control and reliable performance in demanding environments.
This transformer carries UL Listed certification, indicating compliance with relevant electrical safety standards for installation in the United States and Canada. UL listing simplifies procurement for regulated facilities and supports safe integration into control panels, switchgear, and automation equipment. Always verify local code requirements and ensure compliant enclosure wiring practices alongside the UL Listed rating.
Maintenance is minimized by the totally enclosed non‑ventilated design, copper windings, and electrostatic shield, which reduce dust ingress and EMI concerns. The 15 kVA rating with a 150°C rise tolerance supports extended service life under peak loads, lowering spare part and downtime costs. ROI is realized through reduced maintenance intervals, easier installation, and improved uptime in automation and distribution panels.