Eaton T20P11F50CUN12 Transformer - UL Listed, NEMA 12
Part Number: T20P11F50CUN12
Quick Summary
The Eaton T20P11F50CUN12 transformer provides reliable power isolation for industrial control panels. Operators often struggle with dust, moisture, and downtime in harsh environments; this totally enclosed non-ventilated design minimizes contamination and routine maintenance. UL Listed certification, a NEMA 12 enclosure, and copper windings support safety, environmental protection, and long‑term reliability in demanding facilities. With a 50 kVA, single‑phase rating and wide input/output options, it delivers flexible, cost‑effective power distribution across factories, warehouses, and process lines. Its floor-mount design and rugged construction further simplify installation and future upgrades, delivering predictable performance in dynamic industrial settings.
Product Information
Extended Description
T20P11F50CUN12 Eaton: EATON TOTALLY ENCLOSED NON-VENTILATED TRANSFORMER, DOE 2016 EXCEMPT, COPPER, 60HZ, 50KVA, 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
T20P11F50CUN12
UPC
786680248412
Product Length/Depth
34.06 in
Product Height
54.63 in
Product Width
32.46 in
Product Weight
975 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
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: Totally enclosed non-ventilated enclosure provides dust and moisture protection. Business Impact: reduces maintenance costs and downtime in harsh environments. Application: ideal for factory floors and panel assemblies where cleanliness and reliability are critical. Feature: 50 kVA single‑phase rating with 240/480 V input and 120/240 V output. Business Impact: supports flexible power distribution with scalable capacity for evolving loads. Application: machine rooms and distribution centers requiring dependable step‑down power. Feature: Copper windings and 220°C insulation with 115°C rise. Business Impact: enhances thermal performance and long‑term reliability under load, lowering replacement risk. Application: harsh industrial environments with variable loads and elevated ambient temperatures. Feature: Field‑adjustable taps (1@+5%, 2@-5% × 2@+2.5%, 4@-2.5%). Business Impact: voltageMargin control reduces nuisance tripping and improves load regulation. Application: equipment sensitive to voltage fluctuations in manufacturing lines. Feature: NEMA 12 enclosure and UL Listed certification. Business Impact: ensures compliance, safety, and environmental protection for routine maintenance and audits. Application: control panels, switchgear rooms, and durable power centers in dusty facilities. Feature: Floor mounting, large frame 844ANV, and substantial weight (975 lb). Business Impact: stable installation with straightforward anchoring and service access. Application: permanent installations in mechanical rooms and distribution hubs for rugged use.
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FAQs
Plan for floor mounting with an open, level concrete base and adequate clearance for servicing. The unit weighs about 975 lb and measures 34.06 in (L) × 32.46 in (W) × 54.63 in (H), so use a forklift or pallet jack for placement and maintain access around all sides for taps, wiring, and maintenance.
The transformer provides 50 kVA, single-phase power with a primary of 240/480 V and a secondary of 120/240 V, operating at 60 Hz. It includes field-adjustable taps (1@+5%, 2@-5% × 2@+2.5%, 4@-2.5%) and a 3XA wiring connection, enabling compatible interfacing with common industrial loads.
Yes. It uses a totally enclosed non-ventilated design in a NEMA 12 enclosure and carries UL Listing for safety and reliability. This combination protects windings and connections from dust, splashes, and humidity typical of manufacturing floors and utility rooms.
Maintenance is minimized by the enclosure and robust copper windings, with inspection largely focused on enclosure integrity and wiring connections. The design supports straightforward field adjustments via taps and standard wiring (3XA). Its durable frame (844ANV) and 975 lb footprint accommodate long service life with periodic electrical testing and inspection.
Common applications include control panels, machine rooms, and power distribution blocks in factories and warehouses. The 50 kVA rating, rugged NEMA 12 protection, and copper windings translate to improved uptime, reduced maintenance costs, and stable voltage delivery, which collectively support faster project commissioning and a favorable return on investment over the transformer's life.