Eaton S27N12P16P Transformer - UL Listed, 1.5 kVA
Part Number: S27N12P16P
Quick Summary
The Eaton S27N12P16P transformer provides reliable 277 V to 120 V step-down for control panels and equipment. Many buyers struggle with moisture exposure, space constraints, and maintenance needs in rugged environments. UL Listed with a NEMA 3R enclosure and indoor-outdoor Weathershield design helps ensure compliance and long service life. Its 1.5 kVA general-purpose encapsulated EP design offers scalable power for industrial controls, delivering predictable performance and easier procurement.
Product Information
Extended Description
S27N12P16P Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 67P, 60 Hz, single-phase, 277 V, 120 V, NONE, 115 °C rise, 1.5 KVA, indoor-outdoor, 511DD
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S27N12P16P
UPC
786680088063
Product Length/Depth
6.56 in
Product Height
13.03 in
Product Width
5.53 in
Product Weight
30 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.
Certifications
UL Listed
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
67P
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
511DD
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
277 V
Secondary Voltage
120 V
Temperature rise
115 °C rise
Volt ampere rating
1.5 kVA
Weathershield
Indoor-Outdoor
1.5 kVA general-purpose rating paired with 277 V to 120 V outputs provides reliable power for control circuits and small equipment. This headroom reduces nuisance tripping and premature overheating during motor start-ups, and it is well suited for panel builders and machine builders needing a single, versatile power source in control panels and distributed subsystems. Encapsulated EP design with aluminum windings protects windings from moisture, dust, and temperature swings, lowering maintenance costs, increasing MTBF, and reducing field rework. It is ideal for harsh environments, delivering consistent performance in exposed outdoor enclosures and damp indoor spaces. NEMA 3R enclosure with Weathershield enables indoor-outdoor installation without additional housings, simplifying site planning, reducing inventory complexity, and speeding deployment across climates. The 511DD wiring connection and lack of taps reduce wiring errors, shorten commissioning times, and improve consistency across installations, while compatibility with standard control-system harnesses eases retrofits and expansions. UL Listed certification supports regulatory compliance, and Eaton’s one-year warranty (or 18 months from shipment) provides predictable risk mitigation for maintenance budgets and long-term ROI. Overall, the S27N12P16P combines rugged construction with proven performance to support scalable, reliable power distribution in industrial facilities.
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FAQs
The S27N12P16P is a 1.5 kVA, 277 V to 120 V, 60 Hz, single-phase transformer designed for general control-panel use. It fits standard, low-voltage distribution layouts, supports aluminum winding and 511DD wiring, and aligns with common lugs and harnesses. For retrofit projects, verify panel clearance, mounting orientation, and ambient rating to ensure full compliance and straightforward commissioning.
Key specs include 1.5 kVA power rating, 60 Hz frequency, single-phase operation, primary 277 V, secondary 120 V, aluminum windings, EP encapsulation, and a 115 °C temperature rise. The unit features a NEMA 3R enclosure for indoor-outdoor use and is UL Listed, making it suitable for diverse control-system applications and compliant installations.
Yes. The transformer comes with a NEMA 3R enclosure and an Indoor-Outdoor (Weathershield) rating, enabling reliable outdoor installations and damp-space operation without additional housings. This reduces site modifications, speeds deployment, and minimizes corrosion-related maintenance in harsh environments.
UL Listed certification confirms compliance with electrical safety standards, facilitating procurement and audits. The encapsulated EP design, aluminum windings, and rugged enclosure further support long-term reliability. For projects with strict regulatory requirements, UL Listing coupled with the unit’s environmental rating helps meet commissioning, safety, and reliability targets.
The transformer is covered by Eaton’s warranty policy, offering one year from installation or eighteen months from shipment, whichever comes first. This provides predictable protection against manufacturing defects while enabling maintenance budgeting and asset lifecycle planning for facilities and automation teams.