Eaton T20P11S15EEZZ Core-Coil Transformer UL Recognized
Part Number: T20P11S15EEZZ
Quick Summary
Eaton T20P11S15EEZZ Open core-coil transformer delivers reliable low-voltage power for industrial control panels and automation cabinets. In demanding projects, engineers wrestle with voltage variance, space constraints, and mounting documentation. UL Recognized, NEMA TP-1 compliant, and a NEMA TP-1 efficient open-type core and coil assembly provide essential safety and efficiency. With a 15 kVA rating and primary 240 x 480 V paired to a 120/240 V secondary, this device simplifies panel design while keeping wiring organized. The adjustable taps and ventilated construction support site reliability, minimizing field adjustments and maintenance costs while enabling scalable automation deployments. This combination reduces downtime and improves power quality across mixed loads.
Product Information
Extended Description
T20P11S15EEZZ Eaton: Eaton Open core-coil ventilated transformer, DS-3 (1-phase), PV 240 x 480V, Taps: 1 at +5%/2 at -5% x 2 at +2.5%/4 at -2.5%, SV 120/240V, 150°C rise, 15 kVA, EE, ZZ
Product Name
Eaton Open core-coil ventilated transformer
Catalog Number
T20P11S15EEZZ
UPC
786680088254
Product Length/Depth
0.001 in
Product Height
0.001 in
Product Width
0.001 in
Product Weight
0.001 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
NEMA TP-1 Compliant
Certifications
UL Recognized
Catalog Notes
NEMA TP-1 efficient, Open type core and coil assembly
Coil material
Aluminum
Frame
CS15G103
Tap size
1 at +5% FCAN, 2 at -5% FCBN x 2 at +2.5% FCAN, 4 at -2.5% FCBN
Type
Dry Type Distribution Transformer
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
240 x 480 V
Secondary Voltage
120/240 V
Temperature rise
150 °C rise
Volt ampere rating
15 kVA
Open core-coil ventilated design delivers better airflow and reduced temperature rise, boosting efficiency and simplifying service access in dense control panels. This dry-type distribution transformer minimizes oil management requirements and allows straightforward installation in electrical enclosures, reducing maintenance overhead and risk of leaks. With a 15 kVA rating, the transformer comfortably supports multiple control circuits and automation loads without sacrificing performance. By delivering stable secondary voltage across typical factory loads, it can reduce instrument downtime and calibration errors in production lines. Tap configurations provide precise voltage regulation across supply variations. The taps, including 1 at +5%, 2 at -5% x 2 at +2.5%, and 4 at -2.5%, let engineers compensate voltage drops from long feeders and motor starts, improving PLC reliability. Primary and secondary voltages are 240 x 480 V and 120/240 V, at 60 Hz single-phase, aligning with standard industrial power. Compliance and safety are reinforced by NEMA TP-1 compliance and UL Recognized certification, while the catalog notes emphasize NEMA TP-1 efficiency. Aluminum windings in the CS15G103 frame offer a durable, lighter build suited for compact installations. This compact, dry-type design reduces footprint in electrical rooms and simplifies retrofits for expanding automation lines.
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FAQs
This is a single-phase, dry-type open-core transformer with a 240 x 480 V primary and 120/240 V secondary rated for 60 Hz. Install in UL-listed panels or enclosures that support NEMA TP-1 devices. The unit’s aluminum windings and CS15G103 frame facilitate compact mounting, and the open-core design aids ventilation and heat dissipation, reducing enclosure temperature rise.
The T20P11S15EEZZ provides taps at 1 at +5%, 2 at -5% (FCBN), 2 at +2.5% (FCAN), and 4 at -2.5% (FCBN). These allow compensation for line voltage fluctuations and long feeder drops, stabilizing the 120/240 V secondary under real-world conditions and improving downstream sensor and PLC accuracy during startup surges.
Yes. With a 15 kVA rating, 60 Hz single-phase operation, and a primary of 240 x 480 V feeding a 120/240 V secondary, it supports typical automation loads, PLCs, and instrumentation. Its ventilated dry-type construction and open-core design improve heat management in control cabinets, enhancing uptime and reducing maintenance compared with oil-filled alternatives.
The unit is UL Recognized and NEMA TP-1 compliant, signaling safety and compatibility with standard industrial power systems. NEMA TP-1 efficiency notes indicate optimized energy use for open-type core and coil assemblies, while UL recognition simplifies procurement for regulated facilities and end-user maintenance programs.
Maintenance needs are minimal due to the dry-type construction and aluminum windings, which resist oil handling and leakage risks. Warranty terms follow Eaton’s policy (one year from installation or eighteen months from shipment). The combination of reliability, voltage tuning via taps, and compliance can reduce downtime, extend panel life, and lower lifecycle costs in automation-heavy facilities.