Eaton T20P11F37CUN12 Transformer - UL Listed
Part Number: T20P11F37CUN12
Quick Summary
Eaton T20P11F37CUN12 transformer is a totally enclosed non-ventilated unit for 37.5 kVA power distribution in machine control panels. In panel builds, space constraints, cooling requirements, and code compliance can drive costly delays; this design addresses those pain points with a compact, robust enclosure. UL Listed with a NEMA 12 enclosure and DOE 2016 exempt rating ensures safety, environmental protection, and energy-code compliance. Designed for industrial automation, it supports reliable control power in a range of equipment and processes, offering durable copper windings and a floor-mounted footprint that aligns with typical control room layouts and retrofit projects.
Product Information
Extended Description
T20P11F37CUN12 Eaton: EATON TOTALLY ENCLOSED NON-VENTILATED TRANSFORMER, DOE 2016 EXCEMPT, COPPER, 60HZ, 37.5KVA, SINGLE PHASE, 240X480V, 120/240V, NEMA ST-20, 115°C RISE, NEMA 12, 844ANV, 220°C, 1@+5%, 2@-5% X 2@+2.5%, 4@-2.5%
Product Name
Eaton Totally enclosed non-ventilated transformer
Catalog Number
T20P11F37CUN12
UPC
786680248405
Product Length/Depth
34.06 in
Product Height
54.63 in
Product Width
32.46 in
Product Weight
939 lb
Compliances
Not Applicable
Certifications
UL Listed
Coil material
Copper
Enclosure
NEMA 12
Frame
844ANV
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
37.50 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 → Business Impact → Application: Totally enclosed non-ventilated NEMA 12 enclosure protects copper-windings transformers from dust, moisture, and incidental contact, reducing maintenance and downtime in harsh factory environments; this translates to higher uptime for machine controls and panel reliability in food, packaging, or automotive assembly lines. Feature → Business Impact → Application: 37.5 kVA rating with 60 Hz single-phase operation accommodates moderate power isolation and voltage transformation for CNCs, conveyors, and robotics, delivering predictable voltage regulation and protecting sensitive electronics. Feature → Business Impact → Application: Copper coil material offers excellent conductivity and thermal performance, improving efficiency and heat management in continuous operation, which supports longer service life and lower cooling costs in vertical stack panels. Feature → Business Impact → Application: Primary 240/480 V to secondary 120/240 V configuration provides flexible installation for multi-volt control systems and machine starters, enabling simple integration into existing electrical architectures without extensive rewiring. Feature → Business Impact → Application: Tap settings (1@+5%, 2@-5%, 2@+2.5%, 4@-2.5%) and 3XA wiring connection allow voltage tuning and installation flexibility, reducing setup time and improving voltage tolerance in sites with fluctuating supply. Feature → Business Impact → Application: Floor mounting with a 844ANV frame and 34.06 in L × 32.46 in W × 54.63 in H footprint supports stable, accessible installation in equipment rooms or control panels, easing maintenance access and future upgrade planning. Feature → Business Impact → Application: UL Listed with DOE 2016 exempt status provides compliance confidence for procurement and regulatory audits, helping to meet industry standards in manufacturing, process, and automation environments.
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FAQs
Install on a stable floor base using the floor-mount provisions of the 844ANV frame. Connect primary windings to 240/480 V supply using the 3XA wiring configuration, and set the tap sizes to match site voltage conditions: 1@+5%, 2@-5%, 2@+2.5%, 4@-2.5%. Ensure the enclosure is properly grounded and that the panel interior remains within the NEMA 12 protection level. Follow the Eaton datasheet for clearance and thermal considerations to maintain cool operation.
The unit is a single-phase transformer rated at 37.50 kVA with 240/480 V primary and 120/240 V secondary, operating at 60 Hz. It uses copper windings and has a 115°C rise insulation, a 34.06 in length, 32.46 in width, and 54.63 in height, with a weight of 939 lb. Enclosed in a NEMA 12, UL Listed housing, it is designed for robust industrial use.
Yes. The totally enclosed non-ventilated design in a NEMA 12 enclosure protects internal components from dust and moisture, making it well-suited for machine control panels and automated lines in manufacturing environments where reliability and protection are critical.
The transformer is UL Listed and features a NEMA 12 enclosure with a DOE 2016 exempt rating. These certifications support safety, environmental protection, and energy-code compliance for industrial installations and code-compliant panel builds.
With copper windings, robust enclosure protection, and a durable 60 Hz design, this transformer offers long service life and low maintenance. The precise voltage regulation from programmable tap settings reduces secondary voltage fluctuations, minimizing equipment wear and downtime, which improves ROI in continuous-operation environments.