Eaton T20P11S25N4 Ventilated Transformer - UL Listed
Part Number: T20P11S25N4
Quick Summary
Eaton general purpose ventilated transformer delivers reliable power for distribution panels in industrial facilities. Engineers often confront space constraints, overheating risks, and sourcing challenges when upgrading or expanding control systems. This UL Listed unit features a NEMA 4 enclosure and a 150 °C rise capability, delivering rugged performance for tough environments. With aluminum windings and a compact footprint, it supports efficient installation and long-term reliability. The combination of practical protection, Eaton’s support, and compatibility with 480 V to 120/240 V configurations positions it as a solid choice for industrial power distribution and panel design projects, while aligning with common maintenance and safety requirements.
Product Information
Extended Description
T20P11S25N4 Eaton: Eaton NEMA 4 General Purpose Distribution Transformer 25 kVA TENV NEMA 4 XFMR 1PH 240X480-120/240, 150C rise, Aluminum Windings
Product Name
Eaton General purpose ventilated transformer
Catalog Number
T20P11S25N4
UPC
786680226755
Product Length/Depth
1.1 in
Product Height
1.1 in
Product Width
1.1 in
Product Weight
1.1 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.
Compliances
Not Applicable
Certifications
UL Listed
Coil material
Aluminum
Type
Ventilated transformer
Primary voltage
480 V
Temperature rise
150 °C rise
Feature → Business Impact → Application: 25 kVA single-phase rating with 480 V primary and 120/240 V secondary enables compact power distribution for machine control panels and lighting in industrial settings, reducing panel count and wiring complexity. This directly translates to lower installation time and improved space utilization in control rooms and switchgear environments. Feature → Competitive advantage → Application: Ventilated design improves cooling and reduces thermal stress in high-load startups, delivering higher reliability in harsh environments such as manufacturing floors and outdoor equipment enclosures. This supports longer service life and lower downtime, especially in continuous operation applications. Feature → Cost efficiency → Application: Aluminum windings offer robust electrical performance with cost benefits and corrosion resistance, supporting lighter maintenance and easier field servicing in industrial facilities. Feature → Thermal resilience → Application: A 150 °C rise rating provides a comfortable thermal margin for transient loads and startup currents, helping maintain voltage stability and protecting connected equipment in crowded panels. Feature → Certification and protection → Application: UL Listed status paired with a NEMA 4 style enclosure ensures compliance and protection against dust and water ingress, ideal for environments with moisture, dust, or washdown cycles. Feature → Installation practicality → Application: Compact 1.1 in-like footprint and standardized 1-phase configuration simplify mounting, wiring, and retrofits in existing panels, enabling faster deployment and predictable sizing across facilities.
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FAQs
Install the 25 kVA, 480 V primary / 120/240 V secondary transformer in a NEMA 4-rated enclosure, connect the primary to the 480 V supply and the secondary to the panel circuits, and secure the unit to a stable mount. Verify clearances for cooling and follow the manufacturer’s mounting guidelines to ensure proper ventilation and accessibility for maintenance.
The transformer is rated for a 480 V primary input and provides a 120/240 V secondary output, suitable for powering control circuits and auxiliary equipment within industrial panels.
Yes. The unit carries UL Listed certification and features a NEMA 4 style enclosure, providing protection against dust, water ingress, and washdown conditions typical of harsh industrial environments.
It is well suited for machine control panels, lighting circuits, switchgear, and other power distribution tasks in manufacturing, process plants, and outdoor equipment setups where robust cooling and reliable performance are required.
Plan for periodic thermal checks, verify UL compliance remains intact, and monitor for any signs of overheating or insulation wear. The unit’s 150 °C rise rating supports transient loads, but regular inspection helps sustain performance and extends service life.