Eaton S34N12S76 General-Purpose Encapsulated Transformer - UL Listed
Part Number: S34N12S76
Quick Summary
The Eaton S34N12S76 is a general-purpose encapsulated transformer that steps 240/277 V to 120 V for control panels. Engineers often struggle with protecting sensitive loads while fitting large transformers into compact enclosures. UL Listed certification along with a NEMA 3R enclosure rating and indoor-outdoor compatibility support safe, compliant operation in variable environments. With an aluminum coil and a 0.75 kVA rating, it delivers reliable, cost-efficient power for lighting, panel boards, and automation equipment.
Product Information
Extended Description
S34N12S76 Eaton: Eaton General purpose encapsulated transformer, EP, aluminum, NEMA 3R, 58A, 60 Hz, single-phase, 240/277 V, 120 V, NONE, 115 °C rise, 0.75 KVA, indoor-outdoor, 451B
Product Name
Eaton General purpose encapsulated transformer
Catalog Number
S34N12S76
UPC
786680031229
Product Length/Depth
5.75 in
Product Height
11.28 in
Product Width
5.99 in
Product Weight
25 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
58A
Tap size
None
Type
General-Purpose Encapsulated Transformer
Wiring connection
451B
Frequency rating
60 Hz
Phase
Single-phase
Primary voltage
240/277 V
Secondary Voltage
120 V
Temperature rise
115 °C rise
Volt ampere rating
0.75 kVA
Weathershield
Indoor-Outdoor
Encapsulated EP design in a rugged NEMA 3R enclosure reduces moisture ingress and field damage, increasing reliability and lowering maintenance in harsh environments. The aluminum coil winding offers lighter weight and lower material cost, simplifying handling and installation while maintaining robust electrical performance for long-term operation. A 0.75 kVA, 60 Hz, single-phase configuration with 240/277 V primary and 120 V secondary supports common control circuits and lighting loads, minimizing voltage drop and enabling straightforward integration into standard power distribution. The wiring connection 451B provides compatibility with Eaton control panels and distribution equipment, streamlining wiring schemes and reducing installation time. Indoor-outdoor weathershield credentials and a 115 °C rise rating ensure safe operation across ambient conditions, enhancing reliability and uptime in manufacturing and facilities environments. UL Listing further validates safety and compliance, supporting faster procurement and audit readiness while delivering predictable performance in panel boards and automation gear.
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FAQs
Wiring is designed around Eaton’s standard configurations. Connect the primary to 240/277 V supply and the secondary to 120 V loads using the 451B wiring connection. The unit’s NEMA 3R enclosure supports indoor-outdoor installation, and the 25 lb weight plus 5.75 in x 5.99 in x 11.28 in footprint facilitates panel mounting and space planning. Always follow the UL Listed installation guide.
Yes. The 0.75 kVA rating at 60 Hz single-phase operation is suited for low-voltage control circuits, panel power, and lighting loads commonly found in automation and building distribution. For peak loads, ensure total secondary current remains within approximately 6.25 A at 120 V, considering efficiency and regulation. This supports compact, cost-effective control panels without oversizing.
Absolutely. The S34N12S76 features an indoor-outdoor NEMA 3R enclosure and Weathershield design, granting reliable performance in damp or exposed locations. Its aluminum coil and robust encapsulation protect windings from moisture and dust, reducing maintenance needs in outdoor cabinets, utility rooms, or factory exteriors where space is at a premium.
The transformer is UL Listed, confirming safety and reliability for commercial and industrial installations. Its NEMA 3R enclosure supports protected outdoor use, and the design adheres to established electrical safety practices. These certifications simplify procurement and help with passing safety audits in office buildings, data centers, and manufacturing floors.
Encapsulation reduces moisture ingress and seals windings, delivering lower maintenance and longer service life in challenging environments. The rugged EP design minimizes field faults, while the compact footprint and aluminum winding lower installation weight and material costs. Overall, this translates to faster commissioning, fewer replacements, and steady operational uptime in industrial power distribution.