Eaton S27N12P01P General-Purpose Transformer - UL Listed
Part Number: S27N12P01P
Quick Summary
Eaton General-Purpose Transformer is designed to safely convert 277 V to 120 V for control panels and industrial equipment. Engineers often wrestle with bulky, unreliable power supplies that complicate maintenance and inflate energy costs. UL Listed, with a NEMA 3R enclosure and 60 Hz operation, provides reliable performance across indoor-outdoor environments. The 1 kVA rating, aluminum winding, and compact footprint help you optimize panel layouts while meeting safety and regulatory standards. In addition, the 511DD wiring configuration supports straightforward installation and minimizes field wiring errors, while the indoor-outdoor Weathershield ensures versatility across site conditions. This transformer integrates with common control systems and building automation, delivering consistent voltage to sensitive electronics.
Product Information
Extended Description
S27N12P01P Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 67P, 60 Hz, single-phase, 277 V, 120 V, NONE, 115 °C rise, 1 KVA, indoor-outdoor, 511DD
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S27N12P01P
UPC
786680087790
Product Length/Depth
6.56 in
Product Height
13.03 in
Product Width
5.53 in
Product Weight
28 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 kVA
Weathershield
Indoor-Outdoor
Feature: 1 kVA, single-phase, 60 Hz operation. Business Impact: Delivers dependable control power with predictable voltage regulation, reducing downtime and extending equipment life. Application: Ideal for 277 V to 120 V step-down in control panels and automation cabinets. Feature: Aluminum coil construction. Business Impact: Lower weight improves handling during installation and reduces shipping costs, while maintaining efficient energy transfer. Application: Well suited for compact installations in crowded electrical closets and switchgear. Feature: NEMA 3R enclosure with indoor-outdoor capability (Weathershield). Business Impact: Provides rugged protection against moisture, dust, and temperature swings, enabling outdoor or harsh indoor environments. Application: Outdoor-rated facilities, building automation, and remote equipment deployments. Feature: Wiring connection 511DD and no tap changer. Business Impact: Simplifies installation and minimizes field wiring errors, delivering quicker commissioning and lower risk of miswiring. Application: Standard control circuits in industrial plants. Feature: Compact footprint and weight (6.56 in L × 13.03 in H × 5.53 in W; 28 lb). Business Impact: Space savings and easier mounting in tight enclosures, enabling more efficient panel design. Application: Retrofit and new installations in limited-space electrical rooms.
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FAQs
Yes. The S27N12P01P is a UL Listed, single-phase 1 kVA transformer with a NEMA 3R enclosure designed for indoor-outdoor use. It supports 277 V primary and 120 V secondary networks and uses a 511DD wiring configuration, simplifying wiring in standard control panels while meeting common NEC requirements.
Key specs are 1 kVA VA rating, 277 V primary, 120 V secondary, 60 Hz frequency, and 115 °C rise. This combination provides stable voltage conversion for automation loads, minimizes voltage drop under load, and supports reliable operation of sensitive electronics in industrial environments.
Ideal for control panels, motor control centers, and automation cabinets in manufacturing, facilities, and building automation. Its indoor-outdoor rating and rugged NEMA 3R enclosure make it suitable for both indoor installations and exposed outdoor or semi-protected locations.
The unit is UL Listed and features a NEMA 3R enclosure for weather resistance. This ensures compliance with safety standards and reliable operation in harsh environments, reducing regulatory risk and enabling broader installation options.
With a 1 kVA rating and robust aluminum winding, maintenance needs are typical for power transformers and primarily involve periodic inspection of connections and enclosure integrity. The unit’s UL Listing, rugged enclosure, and compact footprint translate to lower downtime, easier installation, and improved panel density, delivering favorable total cost of ownership over time.