Eaton S27N12S16A General-Purpose Transformer - UL Listed
Part Number: S27N12S16A
Quick Summary
Eaton S27N12S16A is a general-purpose encapsulated transformer designed for industrial control panels and power distribution. This device delivers reliable low-voltage power in environments where space and weather resistance matter. Many engineers struggle with moisture intrusion and difficult outdoor installations, which encapsulation and a NEMA 3R enclosure address by design. UL Listed certification accompanies rugged construction, ensuring safe operation in harsh environments, while the indoor-outdoor rating supports versatile placement across facility floors and exterior equipment pads. The combination of a 1.5 kVA rating, 277 V primary, and 120 V secondary supports scalable automation with predictable performance. This transformer also aligns with common control-system standards, delivering a cost-effective solution for durable power in industrial automation and machine-building initiatives.
Product Information
Extended Description
S27N12S16A Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 67, 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
S27N12S16A
UPC
786680088094
Product Length/Depth
6.52 in
Product Height
13.41 in
Product Width
6.37 in
Product Weight
41 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
Catalog Notes
Model A
Coil material
Aluminum
Design
EP
Enclosure
NEMA 3R
Frame
67
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
Feature → Business Impact → Application: The encapsulated aluminum-wound core and coil design delivers durable, moisture-resistant performance for industrial environments, reducing field failures and maintenance costs while supporting stable voltage during peak loads. The 1.5 kVA rating with 277 V to 120 V output is ideal for powering control panels, motor starters, and automation modules in machine rooms and distributed cabinets. Feature → Business Impact → Application: NEMA 3R enclosure and EP construction provide weather resilience and containment of heat and dust, extending service life and enabling safer operation in mixed indoor-outdoor spaces. This makes the unit suitable for exterior equipment pads and sheltered outdoor installations in challenging plant environments. Feature → Business Impact → Application: Aluminum windings offer a cost- and weight-conscious alternative to copper while maintaining conductivity and performance; encapsulation further improves reliability, reducing cooling needs and field servicing. Ideal for upgrades in existing control cabinets where weight and space are at a premium. Feature → Business Impact → Application: Wiring connection 511DD and a taps-free design simplify integration into standard cabinets, reducing installation time and the risk of mis-wiring. This supports faster commissioning of new lines and easier maintenance planning. Feature → Business Impact → Application: UL Listed safety and a 60 Hz, single-phase configuration align with common industrial power-distribution schemes, while a compact footprint (6.52 in L × 13.41 in H × 6.37 in W) fits crowded electrical rooms. Warranty of one year from installation or eighteen months from shipment adds financial predictability for maintenance planning. Feature → Business Impact → Application: With a 1.5 kVA rating and 41 lb weight, the unit delivers scalable capacity without excessive enclosure size, enabling higher panel density and reduced installation labor in automation projects.
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FAQs
The S27N12S16A is designed for indoor-outdoor installations with a NEMA 3R enclosure and UL Listed safety, compatible with standard 511DD wiring. It provides 1.5 kVA, 277 V primary to 120 V secondary at 60 Hz, single-phase operation. Common installations include control panels and power-distribution cabinets, where encapsulation protects against dust, moisture, and temperature cycles.
Key specs include a 1.5 kVA rating, primary 277 V, secondary 120 V, 60 Hz frequency, single-phase operation, aluminum coil, and an 115 °C rise. It is UL Listed and features a NEMA 3R indoor-outdoor enclosure. Wiring connection is 511DD, with no taps, making it straightforward to integrate into standard power-distribution circuits.
Yes. The transformer uses a NEMA 3R enclosure designed for indoor-outdoor service, providing weather resistance for exterior equipment pads and sheltered outdoor installations. Combined with UL Listing and a 1.5 kVA rating, it maintains reliable output in temperature variations and dusty or humid plant spaces typical of industrial facilities.
The S27N12S16A carries UL Listed certification, ensuring safety compliance for electrical components in industrial settings. Its NEMA 3R enclosure further supports protection against environmental contaminants. These certifications help with regulatory audits, insurance requirements, and smoother procurement by confirming safety and durability in harsh environments.
Encapsulation and aluminum windings reduce moisture ingress and field upkeep, lowering maintenance costs over time. The 1.5 kVA rating enables scalable automation without oversized equipment, improving space efficiency and reducing installation labor. Its compact, lighter form factor (41 lb) also simplifies handling and servicing, delivering predictable ROI in control-panel upgrades and new equipment deployments.