Eaton S27N29P51P General purpose encapsulated transformer - UL Listed
Part Number: S27N29P51P
Quick Summary
Eaton S27N29P51P general purpose encapsulated transformer steps 277 V to 208 V for control panels. Engineers face space constraints and outdoor exposure, making rugged yet compact power conversion essential. UL Listed certification supports safety and reliability, while the NEMA 3R enclosure and indoor-outdoor weather capability guard critical loads. Designed for automation and lighting environments, it delivers a compact footprint with dependable performance, lowering integration time and total cost of ownership. The device uses an aluminum coil and a 0.5 kVA rating to reliably feed control circuits from higher mains. With 60 Hz operation and a 115 °C rise, it maintains performance across typical factory temperatures.
Product Information
Extended Description
S27N29P51P Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 57P, 60 Hz, single-phase, 277 V, 208 V, NONE, 115 °C rise, 0.5 KVA, indoor-outdoor, 511L
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S27N29P51P
UPC
786680097652
Product Length/Depth
5.18 in
Product Height
9.34 in
Product Width
4.45 in
Product Weight
15 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
57P
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
511L
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
277 V
Secondary Voltage
208 V
Temperature rise
115 °C rise
Volt ampere rating
0.5 kVA
Weathershield
Indoor-Outdoor
Feature: 0.5 kVA rating with 277 V primary and 208 V secondary. Business Impact: Provides essential load capacity for control circuits while keeping heat and energy use in check. Application: Ideal for small automation panels, PLC interfaces, and lighting transformers in industrial settings. Feature: Aluminum coil and EP encapsulated construction. Business Impact: Reduces weight and improves heat dissipation; encapsulation enhances insulation and protection in crowded panels. Application: Suitable for compact installations where moisture or dust is a concern. Feature: NEMA 3R enclosure with Indoor-Outdoor weather capability. Business Impact: Delivers outdoor-ready reliability, reducing the need for extra housings and weatherproofing. Application: Fits outdoor enclosures or damp environments in factory yards or sheltered spaces. Feature: Compact footprint and moderate weight (5.18 in D, 9.34 in H, 4.45 in W; 15 lb). Business Impact: Eases mounting, lowers panel footprint, and reduces shipping/handling costs. Application: Quick drop-in replacements in existing Eaton EP layouts and retrofit projects. Feature: UL Listed, 60 Hz, single-phase operation, 115 °C rise. Business Impact: Supports regulatory compliance and dependable performance under common industrial conditions. Application: Broad compatibility for electrical installers, service techs, and maintenance teams. Industry insight: The S27N29P51P aligns with Eaton’s EP encapsulated line, balancing robust protection with easy procurement and serviceability for automation professionals.
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FAQs
Begin with verifying panel clearance and mounting space, then position the transformer inside a NEMA 3R enclosure if exposed to the elements. Use the 511L wiring connection per the datasheet, align the primary to 277 V and secondary to 208 V, and secure the unit to prevent vibration. The 15 lb weight aids handling during installation.
The unit is a single-phase transformer rated at 0.5 kVA, with a 277 V primary and a 208 V secondary. It operates at 60 Hz and features an aluminum coil, 115 °C rise, and a 511L wiring connection. This configuration supports typical industrial control circuits and small equipment loads.
Yes. The transformer uses a NEMA 3R enclosure and is rated for indoor-outdoor use, effectively enabling installation in exposed panels or outdoor cabinets. The aluminum coil and encapsulated design improve insulation and resilience against dust, moisture, and temperature variation while maintaining performance.
The S27N29P51P is UL Listed, providing recognized safety certification for electrical products. Its NEMA 3R enclosure supports outdoor-rated protection, and the indoor-outdoor ability aligns with typical industrial installation standards. These certifications help ensure compliance, reduce risk, and simplify procurement for regulated environments.
Encapsulation and aluminum winding reduce maintenance needs and weight, while the compact form factor simplifies installation and retrofits. The 0.5 kVA rating aligns with modest control loads, delivering energy efficiency and predictable performance. A one-year Eaton warranty provides protection against manufacturing defects as part of a broader service ecosystem.