Eaton T20P11F15CUN12 Transformer - UL Listed
Part Number: T20P11F15CUN12
Quick Summary
Eaton Totally enclosed non-ventilated transformer powers control panels and distribution systems by stepping down 240/480V to 120/240V in industrial facilities. In tight spaces, dust and heat can shorten life and increase maintenance, so a rugged enclosure matters. Key certifications and ratings include UL Listed safety approval and a NEMA 12 enclosure for dust and moisture protection. With a 15 kVA rating and single-phase design, it delivers reliable power for machine controls, while copper windings minimize losses. This unit is well-suited for manufacturers needing durable, code-compliant power distribution in demanding environments such as assembly lines and automation bays.
Product Information
Extended Description
T20P11F15CUN12 Eaton: EATON TOTALLY ENCLOSED NON-VENTILATED TRANSFORMER, DOE 2016 EXCEMPT, COPPER, 60HZ, 15KVA, SINGLE PHASE, 240X480V, 120/240V, NEMA ST-20, 115°C RISE, NEMA 12, 843ANV, 220°C, 1@+5%, 2@-5% X 2@+2.5%, 4@-2.5%
Product Name
Eaton Totally enclosed non-ventilated transformer
Catalog Number
T20P11F15CUN12
UPC
786680249594
Product Length/Depth
30.06 in
Product Height
49.63 in
Product Width
29.5 in
Product Weight
562 lb
Compliances
Not Applicable
Certifications
UL Listed
Coil material
Copper
Enclosure
NEMA 12
Frame
843ANV
Insulation
220°C
Mounting
Floor
Tap size
1@+5%, 2@-5% X 2@+2.5%, 4@-2.5%
Wiring connection
3XA
Efficiency
Exempt
Frequency rating
60 Hz
Kva Rating
15 kVA
Phase
Single-phase
Primary voltage
240 V, 480 V
Secondary Voltage
120/240 V
Sound Level
NEMA ST-20
Temperature rise
115 °C rise
Special features
TOTALLY ENCLOSED NON-VENTED NEMA 12 ENCLOSURE
Weathershield
Not required
Feature: 15 kVA single-phase transformer with copper windings. Business Impact: Delivers substantial load capacity with low copper loss, improving overall efficiency and reducing operating costs. Application: Ideal for control panels and small-to-medium automation loops where reliable secondary voltage is essential. Feature: Primary voltage options of 240 V and 480 V with secondary 120/240 V. Business Impact: Flexible, multi-source compatibility reduces inventory and simplifies integration with existing equipment. Application: Suitable for plants switching between equipment voltages or retrofits in legacy lines. Feature: NEMA 12 enclosure with totally enclosed non-ventilated design. Business Impact: Protects critical windings from dust and moisture, extending service life and lowering maintenance needs. Application: On-floor installations in dusty manufacturing spaces or protected electrical rooms. Feature: 60 Hz operation with 115°C rise insulation and copper coil construction. Business Impact: Stable performance under standard industrial power conditions while maintaining safe temperatures and quick heat dissipation. Application: Continuous-duty distribution in control rooms and machine rooms. Feature: Tap sizes and wiring configuration (1@+5%, 2@-5%, 2@+2.5%, 4@-2.5%; wiring connection 3XA). Business Impact: Enables precise voltage regulation to compensate for line voltage fluctuations, improving downstream equipment performance. Application: Field adjustments during commissioning or once installed. Feature: Floor mounting with frame 843ANV and substantial dimensions. Business Impact: Robust support and space-efficient footprint for on-site installations; simplifies alignment with other equipment. Application: Factory floors and centralized electrical closets requiring secure mounting. Feature: UL Listed certification and NEMA 12 enclosure as baseline compliance. Business Impact: Supports safety and environmental requirements across regulated environments, reducing risk and audit findings. Application: Use in regulated facilities, panel builds, and systems requiring documented safety conformance.
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FAQs
Install the 15 kVA, single‑phase transformer on a solid floor or base, aligning with the 843ANV frame. Use the 3XA wiring connection and apply the tap settings (1@+5%, 2@-5%, 2@+2.5%, 4@-2.5%) as needed to maintain output voltage. Provide proper clearance for cooling and access for maintenance while following the enclosure’s NEMA 12 protection requirements.
Key specs include a 15 kVA rating, single‑phase operation at 60 Hz, primary voltage 240 V or 480 V, and secondary voltage 120/240 V. It uses copper windings, has a 115°C rise insulation, and a NEMA 12 totally enclosed non‑ventilated enclosure. The unit is UL Listed and designed for floor mounting in industrial environments.
Yes. The NEMA 12 enclosure provides dust and moisture protection, and the totally enclosed non‑ventilated design minimizes ingress. Combined with copper windings and a robust 115°C rise insulation, it maintains performance in harsh factory settings and reduces unplanned downtime.
The transformer is UL Listed, ensuring safety compliance for electrical equipment. It features a NEMA 12 enclosure suitable for dusty and mildly moist environments. While other standards such as CE or SIL are not listed in the provided data, the UL Listing and NEMA enclosure address key safety and environmental considerations for typical industrial installations.
With copper windings and a sealed NEMA 12 enclosure, routine maintenance is reduced compared with ventilated units, since dust ingress is minimized. Plan periodic inspection of taps and connections (1@+5%, 2@-5%, 2@+2.5%, 4@-2.5%), verify insulation condition, and monitor load to ensure efficient operation. The long service life and low maintenance contribute to favorable ROI in steady, regulated environments.